Discordian date
You are encouraged to solve this task according to the task description, using any language you may know.
- Task
Convert a given date from the Gregorian calendar to the Discordian calendar.
Ada
discordian.adb: <lang Ada>with Ada.Calendar.Arithmetic; with Ada.Text_IO; with Ada.Integer_Text_IO; with Ada.Strings.Unbounded; with Ada.Strings.Unbounded.Text_IO; with Ada.Command_Line;
procedure Discordian is
use Ada.Calendar; use Ada.Strings.Unbounded; use Ada.Command_Line; package UStr_IO renames Ada.Strings.Unbounded.Text_IO;
subtype Year_Number is Integer range 3067 .. 3565;
type Seasons is (Chaos, Discord, Confusion, Bureaucracy, The_Aftermath);
type Days_Of_Week is (Sweetmorn, Boomtime, Pungenday,
Prickle_Prickle, Setting_Orange);
subtype Day_Number is Integer range 1 .. 73;
type Discordian_Date is record
Year : Year_Number;
Season : Seasons;
Day : Day_Number;
Week_Day : Days_Of_Week;
Is_Tibs_Day : Boolean := False;
end record;
function Week_Day_To_Str(Day : Days_Of_Week) return Unbounded_String is
s : Unbounded_String;
begin
case Day is
when Sweetmorn => s := To_Unbounded_String("Sweetmorn");
when Boomtime => s := To_Unbounded_String("Boomtime");
when Pungenday => s := To_Unbounded_String("Pungenday");
when Prickle_Prickle => s := To_Unbounded_String("Prickle-Prickle");
when Setting_Orange => s := To_Unbounded_String("Setting Orange");
end case;
return s;
end Week_Day_To_Str;
function Holiday(Season: Seasons) return Unbounded_String is
s : Unbounded_String;
begin
case Season is
when Chaos => s := To_Unbounded_String("Chaoflux");
when Discord => s := To_Unbounded_String("Discoflux");
when Confusion => s := To_Unbounded_String("Confuflux");
when Bureaucracy => s := To_Unbounded_String("Bureflux");
when The_Aftermath => s := To_Unbounded_String("Afflux");
end case;
return s;
end Holiday;
function Apostle(Season: Seasons) return Unbounded_String is
s : Unbounded_String;
begin
case Season is
when Chaos => s := To_Unbounded_String("Mungday");
when Discord => s := To_Unbounded_String("Mojoday");
when Confusion => s := To_Unbounded_String("Syaday");
when Bureaucracy => s := To_Unbounded_String("Zaraday");
when The_Aftermath => s := To_Unbounded_String("Maladay");
end case;
return s;
end Apostle;
function Season_To_Str(Season: Seasons) return Unbounded_String is
s : Unbounded_String;
begin
case Season is
when Chaos => s := To_Unbounded_String("Chaos");
when Discord => s := To_Unbounded_String("Discord");
when Confusion => s := To_Unbounded_String("Confusion");
when Bureaucracy => s := To_Unbounded_String("Bureaucracy");
when The_Aftermath => s := To_Unbounded_String("The Aftermath");
end case;
return s;
end Season_To_Str;
procedure Convert (From : Time; To : out Discordian_Date) is
use Ada.Calendar.Arithmetic;
First_Day : Time;
Number_Days : Day_Count;
Leap_Year : boolean;
begin
First_Day := Time_Of (Year => Year (From), Month => 1, Day => 1);
Number_Days := From - First_Day;
To.Year := Year (Date => From) + 1166;
To.Is_Tibs_Day := False;
Leap_Year := False;
if Year (Date => From) mod 4 = 0 then
if Year (Date => From) mod 100 = 0 then
if Year (Date => From) mod 400 = 0 then
Leap_Year := True;
end if;
else
Leap_Year := True;
end if;
end if;
if Leap_Year then
if Number_Days > 59 then
Number_Days := Number_Days - 1;
elsif Number_Days = 59 then
To.Is_Tibs_Day := True;
end if;
end if;
To.Day := Day_Number (Number_Days mod 73 + 1);
case Number_Days / 73 is
when 0 => To.Season := Chaos;
when 1 => To.Season := Discord;
when 2 => To.Season := Confusion;
when 3 => To.Season := Bureaucracy;
when 4 => To.Season := The_Aftermath;
when others => raise Constraint_Error;
end case;
case Number_Days mod 5 is
when 0 => To.Week_Day := Sweetmorn;
when 1 => To.Week_Day := Boomtime;
when 2 => To.Week_Day := Pungenday;
when 3 => To.Week_Day := Prickle_Prickle;
when 4 => To.Week_Day := Setting_Orange;
when others => raise Constraint_Error;
end case;
end Convert;
procedure Put (Item : Discordian_Date) is
begin
if Item.Is_Tibs_Day then
Ada.Text_IO.Put ("St. Tib's Day");
else
UStr_IO.Put (Week_Day_To_Str(Item.Week_Day));
Ada.Text_IO.Put (", day" & Integer'Image (Item.Day));
Ada.Text_IO.Put (" of ");
UStr_IO.Put (Season_To_Str (Item.Season));
if Item.Day = 5 then
Ada.Text_IO.Put (", ");
UStr_IO.Put (Apostle(Item.Season));
elsif Item.Day = 50 then
Ada.Text_IO.Put (", ");
UStr_IO.Put (Holiday(Item.Season));
end if;
end if;
Ada.Text_IO.Put (" in the YOLD" & Integer'Image (Item.Year));
Ada.Text_IO.New_Line;
end Put;
Test_Day : Time;
Test_DDay : Discordian_Date;
Year : Integer;
Month : Integer;
Day : Integer;
YYYYMMDD : Integer;
begin
if Argument_Count = 0 then
Test_Day := Clock;
Convert (From => Test_Day, To => Test_DDay);
Put (Test_DDay);
end if;
for Arg in 1..Argument_Count loop
if Argument(Arg)'Length < 8 then
Ada.Text_IO.Put("ERROR: Invalid Argument : '" & Argument(Arg) & "'");
Ada.Text_IO.Put("Input format YYYYMMDD");
raise Constraint_Error;
end if;
begin
YYYYMMDD := Integer'Value(Argument(Arg));
exception
when Constraint_Error =>
Ada.Text_IO.Put("ERROR: Invalid Argument : '" & Argument(Arg) & "'");
raise;
end;
Day := YYYYMMDD mod 100;
if Day < Day_Number'First or Day > Day_Number'Last then
Ada.Text_IO.Put("ERROR: Invalid Day:" & Integer'Image(Day));
raise Constraint_Error;
end if;
Month := ((YYYYMMDD - Day) / 100) mod 100;
if Month < Month_Number'First or Month > Month_Number'Last then
Ada.Text_IO.Put("ERROR: Invalid Month:" & Integer'Image(Month));
raise Constraint_Error;
end if;
Year := ((YYYYMMDD - Day - Month * 100) / 10000);
if Year < 1901 or Year > 2399 then
Ada.Text_IO.Put("ERROR: Invalid Year:" & Integer'Image(Year));
raise Constraint_Error;
end if;
Test_Day := Time_Of (Year => Year, Month => Month, Day => Day);
Convert (From => Test_Day, To => Test_DDay);
Put (Test_DDay);
end loop;
end Discordian; </lang>
- Output:
$ ./discordian 21001231 20120228 20120229 20120301 20100722 20120902 20121231 Setting Orange, day 73 of The Aftermath in the YOLD 3266 Prickle-Prickle, day 59 of Chaos in the YOLD 3178 St. Tib's Day in the YOLD 3178 Setting Orange, day 60 of Chaos in the YOLD 3178 Pungenday, day 57 of Confusion in the YOLD 3176 Setting Orange, day 26 of Bureaucracy in the YOLD 3178 Setting Orange, day 73 of The Aftermath in the YOLD 3178
AWK
<lang AWK>
- DDATE.AWK - Gregorian to Discordian date contributed by Dan Nielsen
- syntax: GAWK -f DDATE.AWK [YYYYMMDD | YYYY-MM-DD | MM-DD-YYYY | DDMMMYYYY | YYYY] ...
- examples:
- GAWK -f DDATE.AWK today
- GAWK -f DDATE.AWK 20110722 one date
- GAWK -f DDATE.AWK 20110722 20120229 two dates
- GAWK -f DDATE.AWK 2012 yearly calendar
BEGIN {
split("Chaos,Discord,Confusion,Bureaucracy,The Aftermath",season_arr,",")
split("Sweetmorn,Boomtime,Pungenday,Prickle-Prickle,Setting Orange",weekday_arr,",")
split("Mungday,Mojoday,Syaday,Zaraday,Maladay",apostle_holyday_arr,",")
split("Chaoflux,Discoflux,Confuflux,Bureflux,Afflux",season_holyday_arr,",")
split("31,28,31,30,31,30,31,31,30,31,30,31",days_in_month,",") # days per month in non leap year
split("0 31 59 90 120 151 181 212 243 273 304 334",rdt," ") # relative day table
mmm = "JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC"
- 1 2 3 4 5 6 7 8 9 10 11 12
if (ARGV[1] == "") { # use current date
ARGV[ARGC++] = strftime("%Y%m%d") # GAWK only
# ARGV[ARGC++] = dos_date() # any AWK
# timetab(arr); ARGV[ARGC++] = sprintf("%04d%02d%02d",arr["YEAR"],arr["MONTH"],arr["DAY"]) # TAWK only
}
for (argno=1; argno<=ARGC-1; argno++) { # validate command line arguments
print("")
x = toupper(ARGV[argno])
if (x ~ /^[0-9][0-9][0-9][0-9][01][0-9][0-3][0-9]$/) { # YYYYMMDD
main(x)
}
else if (x ~ /^[0-9][0-9][0-9][0-9]-[01][0-9]-[0-3][0-9]$/) { # YYYY-MM-DD
gsub(/-/,"",x)
main(x)
}
else if (x ~ /^[01][0-9]-[0-3][0-9]-[0-9][0-9][0-9][0-9]$/) { # MM-DD-YYYY
main(substr(x,7,4) substr(x,1,2) substr(x,4,2))
}
else if (x ~ /^[0-3][0-9](JAN|FEB|MAR|APR|MAY|JUN|JUL|AUG|SEP|OCT|NOV|DEC)[0-9][0-9][0-9][0-9]$/) { # DDMMMYYYY
main(sprintf("%04d%02d%02d",substr(x,6,4),int((match(mmm,substr(x,3,3))/4)+1),substr(x,1,2)))
}
else if (x ~ /^[0-9][0-9][0-9][0-9]$/) { # YYYY
yearly_calendar(x)
}
else {
error("begin")
}
}
if (errors == 0) { exit(0) } else { exit(1) }
} function main(x, d,dyear,m,season_day,season_nbr,text,weekday_nbr,y,year_day) {
y = substr(x,1,4) + 0
m = substr(x,5,2) + 0
d = substr(x,7,2) + 0
days_in_month[2] = (leap_year(y) == 1) ? 29 : 28
if (m < 1 || m > 12 || d < 1 || d > days_in_month[m]+0) {
error("main")
return
}
year_day = rdt[m] + d
dyear = y + 1166 # Discordian year
season_nbr = int((year_day - 1 ) / 73) + 1
season_day = ((year_day - 1) % 73) + 1
weekday_nbr = ((year_day - 1 ) % 5) + 1
if (season_day == 5) {
text = ", " apostle_holyday_arr[season_nbr]
}
else if (season_day == 50) {
text = ", " season_holyday_arr[season_nbr]
}
if (leap_year(y) && m == 2 && d == 29) {
printf("%04d-%02d-%02d is St. Tib's day, Year of Our Lady of Discord %s\n",y,m,d,dyear)
}
else {
printf("%04d-%02d-%02d is %s, %s %s, Year of Our Lady of Discord %s%s\n",
y,m,d,weekday_arr[weekday_nbr],season_arr[season_nbr],season_day,dyear,text)
}
} function leap_year(y) { # leap year: 0=no, 1=yes
return (y % 400 == 0 || (y % 4 == 0 && y % 100)) ? 1 : 0
} function yearly_calendar(y, d,m) {
days_in_month[2] = (leap_year(y) == 1) ? 29 : 28
for (m=1; m<=12; m++) {
for (d=1; d<=days_in_month[m]; d++) {
main(sprintf("%04d%02d%02d",y,m,d))
}
}
} function dos_date( arr,cmd,d,x) { # under Microsoft Windows
- XP - The current date is: MM/DD/YYYY
- 8 - The current date is: DOW MM/DD/YYYY
cmd = "DATE <NUL"
cmd | getline x
close(cmd) # close pipe
d = arr[split(x,arr," ")]
return sprintf("%04d%02d%02d",substr(d,7,4),substr(d,1,2),substr(d,4,2))
} function error(x) {
printf("error: argument %d is invalid, %s, in %s\n",argno,ARGV[argno],x)
errors++
} </lang>
- Output:
GAWK -f DDATE.AWK 2011-08-22 is Prickle-Prickle, Bureaucracy 15, Year of Our Lady of Discord 3177 GAWK -f DDATE.AWK 20110722 20120229 2011-07-22 is Pungenday, Confusion 57, Year of Our Lady of Discord 3177 2012-02-29 is St. Tib's day, Year of Our Lady of Discord 3178
BASIC
<lang qbasic>#INCLUDE "datetime.bi"
DECLARE FUNCTION julian(AS DOUBLE) AS INTEGER
SeasonNames: DATA "Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath" Weekdays: DATA "Setting Orange", "Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle" DaysPreceding1stOfMonth: ' jan feb mar apr may jun jul aug sep oct nov dec DATA 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
DIM dyear AS INTEGER, dseason AS STRING, dday AS INTEGER, dweekday AS STRING DIM tmpdate AS DOUBLE, jday AS INTEGER, result AS STRING DIM L0 AS INTEGER
IF LEN(COMMAND$) THEN
tmpdate = DATEVALUE(COMMAND$)
ELSE
tmpdate = FIX(NOW())
END IF dyear = YEAR(tmpdate) + 1166 IF (2 = MONTH(tmpdate)) AND (29 = DAY(tmpdate)) THEN
result = "Saint Tib's Day, " & STR$(dyear) & " YOLD"
ELSE
jday = julian(tmpdate)
RESTORE SeasonNames
FOR L0 = 1 TO ((jday - 1) \ 73) + 1
READ dseason
NEXT
dday = (jday MOD 73)
IF 0 = dday THEN dday = 73
RESTORE Weekdays
FOR L0 = 1 TO (jday MOD 5) + 1
READ dweekday
NEXT
result = dweekday & ", " & dseason & " " & TRIM$(STR$(dday)) & ", " & TRIM$(STR$(dyear)) & " YOLD"
END IF
? result END
FUNCTION julian(d AS DOUBLE) AS INTEGER
'doesn't account for leap years (not needed for ddate)
DIM tmp AS INTEGER, L1 AS INTEGER
RESTORE DaysPreceding1stOfMonth
FOR L1 = 1 TO MONTH(d)
READ tmp
NEXT
FUNCTION = tmp + DAY(d)
END FUNCTION</lang>
- Output:
"Discordian date.exe" 19-10-2015 Boomtime, Bureaucracy 73, 3181 YOLD
Batch File
<lang dos>@echo off goto Parse
Discordian Date Converter: Usage:
ddate ddate /v ddate /d isoDate ddate /v /d isoDate
- Parse
shift if "%0"=="" goto Prologue if "%0"=="/v" set Verbose=1 if "%0"=="/d" set dateToTest=%1 if "%0"=="/d" shift goto Parse
- Prologue
if "%dateToTest%"=="" set dateToTest=%date% for %%a in (GYear GMonth GDay GMonthName GWeekday GDayThisYear) do set %%a=fnord for %%a in (DYear DMonth DDay DMonthName DWeekday) do set %%a=MUNG goto Start
- Start
for /f "tokens=1,2,3 delims=/:;-. " %%a in ('echo %dateToTest%') do ( set GYear=%%a set GMonth=%%b set GDay=%%c ) goto GMonthName
- GMonthName
if %GMonth% EQU 1 set GMonthName=January if %GMonth% EQU 2 set GMonthName=February if %GMonth% EQU 3 set GMonthName=March if %GMonth% EQU 4 set GMonthName=April if %GMonth% EQU 5 set GMonthName=May if %GMonth% EQU 6 set GMonthName=June if %GMonth% EQU 7 set GMonthName=July if %GMonth% EQU 8 set GMonthName=August if %GMonth% EQU 9 set GMonthName=September if %GMonth% EQU 10 set GMonthName=October if %GMonth% EQU 11 set GMonthName=November if %GMonth% EQU 12 set GMonthName=December goto GLeap
- GLeap
set /a CommonYear=GYear %% 4 set /a CommonCent=GYear %% 100 set /a CommonQuad=GYear %% 400 set GLeap=0 if %CommonYear% EQU 0 set GLeap=1 if %CommonCent% EQU 0 set GLeap=0 if %CommonQuad% EQU 0 set GLeap=1 goto GDayThisYear
- GDayThisYear
set GDayThisYear=%GDay% if %GMonth% GTR 11 set /a GDayThisYear=%GDayThisYear%+30 if %GMonth% GTR 10 set /a GDayThisYear=%GDayThisYear%+31 if %GMonth% GTR 9 set /a GDayThisYear=%GDayThisYear%+30 if %GMonth% GTR 8 set /a GDayThisYear=%GDayThisYear%+31 if %GMonth% GTR 7 set /a GDayThisYear=%GDayThisYear%+31 if %GMonth% GTR 6 set /a GDayThisYear=%GDayThisYear%+30 if %GMonth% GTR 5 set /a GDayThisYear=%GDayThisYear%+31 if %GMonth% GTR 4 set /a GDayThisYear=%GDayThisYear%+30 if %GMonth% GTR 3 set /a GDayThisYear=%GDayThisYear%+31 if %GMonth% GTR 2 if %GLeap% EQU 1 set /a GDayThisYear=%GDayThisYear%+29 if %GMonth% GTR 2 if %GLeap% EQU 0 set /a GDayThisYear=%GDayThisYear%+28 if %GMonth% GTR 1 set /a GDayThisYear=%GDayThisYear%+31 goto DYear
- DYear
set /a DYear=GYear+1166 goto DMonth
- DMonth
set DMonth=1 set DDay=%GDayThisYear% if %DDay% GTR 73 ( set /a DDay=%DDay%-73 set /a DMonth=%DMonth%+1 ) if %DDay% GTR 73 ( set /a DDay=%DDay%-73 set /a DMonth=%DMonth%+1 ) if %DDay% GTR 73 ( set /a DDay=%DDay%-73 set /a DMonth=%DMonth%+1 ) if %DDay% GTR 73 ( set /a DDay=%DDay%-73 set /a DMonth=%DMonth%+1 ) goto DDay
- DDay
if %GLeap% EQU 1 ( if %GDayThisYear% GEQ 61 ( set /a DDay=%DDay%-1 ) ) if %DDay% EQU 0 ( set /a DDay=73 set /a DMonth=%DMonth%-1 ) goto DMonthName
- DMonthName
if %DMonth% EQU 1 set DMonthName=Chaos if %DMonth% EQU 2 set DMonthName=Discord if %DMonth% EQU 3 set DMonthName=Confusion if %DMonth% EQU 4 set DMonthName=Bureaucracy if %DMonth% EQU 5 set DMonthName=Aftermath goto DTib
- DTib
set DTib=0 if %GDayThisYear% EQU 60 if %GLeap% EQU 1 set DTib=1 if %GLeap% EQU 1 if %GDayThisYear% GTR 60 set /a GDayThisYear=%GDayThisYear%-1 set DWeekday=%GDayThisYear% goto DWeekday
- DWeekday
if %DWeekday% LEQ 5 goto _DWeekday set /a DWeekday=%DWeekday%-5 goto DWeekday
- _DWeekday
if %DWeekday% EQU 1 set DWeekday=Sweetmorn if %DWeekday% EQU 2 set DWeekday=Boomtime if %DWeekday% EQU 3 set DWeekday=Pungenday if %DWeekday% EQU 4 set DWeekday=Prickle-Prickle if %DWeekday% EQU 5 set DWeekday=Setting Orange goto GWeekday
- GWeekday
goto GEnding
- GEnding
set GEnding=th for %%a in (1 21 31) do if %GDay% EQU %%a set GEnding=st for %%a in (2 22) do if %GDay% EQU %%a set GEnding=nd for %%a in (3 23) do if %GDay% EQU %%a set GEnding=rd goto DEnding
- DEnding
set DEnding=th for %%a in (1 21 31 41 51 61 71) do if %Dday% EQU %%a set DEnding=st for %%a in (2 22 32 42 52 62 72) do if %Dday% EQU %%a set DEnding=nd for %%a in (3 23 33 43 53 63 73) do if %Dday% EQU %%a set DEnding=rd goto Display
- Display
if "%Verbose%"=="1" goto Display2 echo. if %DTib% EQU 1 ( echo St. Tib's Day, %DYear% ) else echo %DWeekday%, %DMonthName% %DDay%%DEnding%, %DYear% goto Epilogue
- Display2
echo. echo Gregorian: %GMonthName% %GDay%%GEnding%, %GYear% if %DTib% EQU 1 ( echo Discordian: St. Tib's Day, %DYear% ) else echo Discordian: %DWeekday%, %DMonthName% %DDay%%DEnding%, %DYear% goto Epilogue
- Epilogue
set Verbose= set dateToTest= echo.
- End
</lang>
- Output:
H:\>ddate Pungenday, Confusion 12th, 3182 H:\>ddate /v Gregorian: June 07th, 2016 Discordian: Pungenday, Confusion 12th, 3182 H:\>ddate /d 2016-02-28 Prickle-Prickle, Chaos 59th, 3182 H:\>ddate /v /d 2016-02-28 Gregorian: February 28th, 2016 Discordian: Prickle-Prickle, Chaos 59th, 3182 H:\>ddate /v /d 2016-02-29 Gregorian: February 29th, 2016 Discordian: St. Tib's Day, 3182 H:\>ddate /d 2016-02-29 St. Tib's Day, 3182 H:\>
This program assumes the date is in ISO order (yyyy-mm-dd) and has leading zeros. It also assumes the system date is similarly formatted, which is atypical on Windows machines.
Built on CMD.EXE version 5.1.2600.5512 (xpsp.080413-2111).
BBC BASIC
<lang bbcbasic> INSTALL @lib$+"DATELIB"
PRINT "01/01/2011 -> " FNdiscordian("01/01/2011")
PRINT "05/01/2011 -> " FNdiscordian("05/01/2011")
PRINT "28/02/2011 -> " FNdiscordian("28/02/2011")
PRINT "01/03/2011 -> " FNdiscordian("01/03/2011")
PRINT "22/07/2011 -> " FNdiscordian("22/07/2011")
PRINT "31/12/2011 -> " FNdiscordian("31/12/2011")
PRINT "01/01/2012 -> " FNdiscordian("01/01/2012")
PRINT "05/01/2012 -> " FNdiscordian("05/01/2012")
PRINT "28/02/2012 -> " FNdiscordian("28/02/2012")
PRINT "29/02/2012 -> " FNdiscordian("29/02/2012")
PRINT "01/03/2012 -> " FNdiscordian("01/03/2012")
PRINT "22/07/2012 -> " FNdiscordian("22/07/2012")
PRINT "31/12/2012 -> " FNdiscordian("31/12/2012")
END
DEF FNdiscordian(date$)
LOCAL Season$(), Weekday$(), mjd%, year%, day%
DIM Season$(4), Weekday$(4)
Season$() = "Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"
Weekday$() = "Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle", "Setting Orange"
mjd% = FN_readdate(date$, "dmy", 2000)
year% = FN_year(mjd%)
IF FN_month(mjd%)=2 AND FN_day(mjd%)=29 THEN
= "St. Tib's Day, YOLD " + STR$(year% + 1166)
ENDIF
IF FN_month(mjd%) < 3 THEN
day% = mjd% - FN_mjd(1, 1, year%)
ELSE
day% = mjd% - FN_mjd(1, 3, year%) + 59
ENDIF
= Weekday$(day% MOD 5) + ", " + STR$(day% MOD 73 + 1) + " " + \
\ Season$(day% DIV 73) + ", YOLD " + STR$(year% + 1166)</lang>
- Output:
01/01/2011 -> Sweetmorn, 1 Chaos, YOLD 3177 05/01/2011 -> Setting Orange, 5 Chaos, YOLD 3177 28/02/2011 -> Prickle-Prickle, 59 Chaos, YOLD 3177 01/03/2011 -> Setting Orange, 60 Chaos, YOLD 3177 22/07/2011 -> Pungenday, 57 Confusion, YOLD 3177 31/12/2011 -> Setting Orange, 73 The Aftermath, YOLD 3177 01/01/2012 -> Sweetmorn, 1 Chaos, YOLD 3178 05/01/2012 -> Setting Orange, 5 Chaos, YOLD 3178 28/02/2012 -> Prickle-Prickle, 59 Chaos, YOLD 3178 29/02/2012 -> St. Tib's Day, YOLD 3178 01/03/2012 -> Setting Orange, 60 Chaos, YOLD 3178 22/07/2012 -> Pungenday, 57 Confusion, YOLD 3178 31/12/2012 -> Setting Orange, 73 The Aftermath, YOLD 3178
Befunge
Reads the date to convert from stdin as three separate numeric inputs (year, month, and day).
<lang befunge>0" :raeY">:#,_&>\" :htnoM">:#,_&>04p" :yaD">:#,_$&>55+,1-:47*v v"f I".+1%,,,,"Day I":$_:#<0#!4#:p#-4#1g4-#0+#<<_v#!*!-2g40!-< >"o",,,/:5+*66++:4>g#<:#44#:9#+*#1-#,_$$0 v_v#!< >$ 0 "yaD " v @,+55.+*+92"j"$_,#!>#:<", in the YOLD"*84 <.>,:^ :"St. Tib's"< $# #"#"##"#"Chaos$Discord$Confusion$Bureaucracy$The Aftermath$</lang>
- Output:
(multiple runs)
Year: 2015 Month: 10 Day: 19 Day 73 of Bureaucracy, in the YOLD 3181 Year: 2012 Month: 2 Day: 29 St. Tib's Day, in the YOLD 3178 Year: 2010 Month: 7 Day: 22 Day 57 of Confusion, in the YOLD 3176
C
For the source code of ddate in util-linux package, see [[1]].
<lang C>#include <stdlib.h>
- include <stdio.h>
- include <time.h>
- define day_of_week( x ) ((x) == 1 ? "Sweetmorn" :\
(x) == 2 ? "Boomtime" :\
(x) == 3 ? "Pungenday" :\
(x) == 4 ? "Prickle-Prickle" :\
"Setting Orange")
- define season( x ) ((x) == 0 ? "Chaos" :\
(x) == 1 ? "Discord" :\
(x) == 2 ? "Confusion" :\
(x) == 3 ? "Bureaucracy" :\
"The Aftermath")
- define date( x ) ((x)%73 == 0 ? 73 : (x)%73)
- define leap_year( x ) ((x) % 400 == 0 || (((x) % 4) == 0 && (x) % 100))
char * ddate( int y, int d ){
int dyear = 1166 + y;
char * result = malloc( 100 * sizeof( char ) );
if( leap_year( y ) ){
if( d == 60 ){
sprintf( result, "St. Tib's Day, YOLD %d", dyear );
return result;
} else if( d >= 60 ){
-- d;
}
}
sprintf( result, "%s, %s %d, YOLD %d",
day_of_week(d%5), season(((d%73)==0?d-1:d)/73 ), date( d ), dyear );
return result;
}
int day_of_year( int y, int m, int d ){
int month_lengths[ 12 ] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
for( ; m > 1; m -- ){
d += month_lengths[ m - 2 ];
if( m == 3 && leap_year( y ) ){
++ d;
}
}
return d;
}
int main( int argc, char * argv[] ){
time_t now;
struct tm * now_time;
int year, doy;
if( argc == 1 ){
now = time( NULL );
now_time = localtime( &now );
year = now_time->tm_year + 1900; doy = now_time->tm_yday + 1;
} else if( argc == 4 ){
year = atoi( argv[ 1 ] ); doy = day_of_year( atoi( argv[ 1 ] ), atoi( argv[ 2 ] ), atoi( argv[ 3 ] ) );
}
char * result = ddate( year, doy );
puts( result );
free( result );
return 0;
}</lang>
Demonstration:
$ ./ddate 2015 10 19 Boomtime, Bureaucracy 73, YOLD 3181 $ ./ddate 7 1 2011 Sweetmorn, The Aftermath 40, YOLD 1173 $ ./ddate 2011 1 7 Boomtime, Chaos 7, YOLD 3177 $ ./ddate 2012 2 28 Prickle-Prickle, Chaos 59, YOLD 3178 $ ./ddate 2012 2 29 St. Tib's Day, YOLD 3178 $ ./ddate 2012 3 1 Setting Orange, Chaos 60, YOLD 3178 $ ./ddate 2010 7 22 Pungenday, Confusion 57, YOLD 3176 $ ./ddate # today is Jan 4, 2016 Prickle-Prickle, Chaos 4, YOLD 3182
C++
<lang cpp>
- include <iostream>
- include <algorithm>
- include <vector>
- include <sstream>
- include <iterator>
using namespace std; class myTuple { public:
void set( int a, int b, string c ) { t.first.first = a; t.first.second = b; t.second = c; }
bool operator == ( pair<int, int> p ) { return p.first == t.first.first && p.second == t.first.second; }
string second() { return t.second; }
private:
pair<pair<int, int>, string> t;
}; class discordian { public:
discordian() {
myTuple t;
t.set( 5, 1, "Mungday" ); holyday.push_back( t ); t.set( 19, 2, "Chaoflux" ); holyday.push_back( t );
t.set( 29, 2, "St. Tib's Day" ); holyday.push_back( t ); t.set( 19, 3, "Mojoday" ); holyday.push_back( t );
t.set( 3, 5, "Discoflux" ); holyday.push_back( t ); t.set( 31, 5, "Syaday" ); holyday.push_back( t );
t.set( 15, 7, "Confuflux" ); holyday.push_back( t ); t.set( 12, 8, "Zaraday" ); holyday.push_back( t );
t.set( 26, 9, "Bureflux" ); holyday.push_back( t ); t.set( 24, 10, "Maladay" ); holyday.push_back( t );
t.set( 8, 12, "Afflux" ); holyday.push_back( t );
seasons.push_back( "Chaos" ); seasons.push_back( "Discord" ); seasons.push_back( "Confusion" );
seasons.push_back( "Bureaucracy" ); seasons.push_back( "The Aftermath" );
wdays.push_back( "Setting Orange" ); wdays.push_back( "Sweetmorn" ); wdays.push_back( "Boomtime" );
wdays.push_back( "Pungenday" ); wdays.push_back( "Prickle-Prickle" );
}
void convert( int d, int m, int y ) {
if( d == 0 || m == 0 || m > 12 || d > getMaxDay( m, y ) ) {
cout << "\nThis is not a date!";
return;
}
vector<myTuple>::iterator f = find( holyday.begin(), holyday.end(), make_pair( d, m ) );
int dd = d, day, wday, sea, yr = y + 1166;
for( int x = 1; x < m; x++ )
dd += getMaxDay( x, 1 );
day = dd % 73; if( !day ) day = 73;
wday = dd % 5;
sea = ( dd - 1 ) / 73;
if( d == 29 && m == 2 && isLeap( y ) ) {
cout << ( *f ).second() << " " << seasons[sea] << ", Year of Our Lady of Discord " << yr;
return;
}
cout << wdays[wday] << " " << seasons[sea] << " " << day;
if( day > 10 && day < 14 ) cout << "th";
else switch( day % 10) {
case 1: cout << "st"; break;
case 2: cout << "nd"; break;
case 3: cout << "rd"; break;
default: cout << "th";
}
cout << ", Year of Our Lady of Discord " << yr;
if( f != holyday.end() ) cout << " - " << ( *f ).second();
}
private:
int getMaxDay( int m, int y ) {
int dd[] = { 0, 31, isLeap( y ) ? 29 : 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; return dd[m];
}
bool isLeap( int y ) {
bool l = false;
if( !( y % 4 ) ) {
if( y % 100 ) l = true;
else if( !( y % 400 ) ) l = true;
}
return l;
}
vector<myTuple> holyday; vector<string> seasons, wdays;
}; int main( int argc, char* argv[] ) {
string date; discordian disc;
while( true ) {
cout << "Enter a date (dd mm yyyy) or 0 to quit: "; getline( cin, date ); if( date == "0" ) break;
if( date.length() == 10 ) {
istringstream iss( date );
vector<string> vc;
copy( istream_iterator<string>( iss ), istream_iterator<string>(), back_inserter<vector<string> >( vc ) );
disc.convert( atoi( vc[0].c_str() ), atoi( vc[1].c_str() ), atoi( vc[2].c_str() ) );
cout << "\n\n\n";
} else cout << "\nIs this a date?!\n\n";
}
return 0;
} </lang>
- Output:
Enter a date (dd mm yyyy) or 0 to quit: 19 10 2015 Boomtime, Bureaucracy 73rd, Year of Our Lady of Discord 3181
Enter a date (dd mm yyyy) or 0 to quit: 08 06 2015 Prickle-Prickle, Confusion 13th, Year of Our Lady of Discord 3181
Enter a date (dd mm yyyy) or 0 to quit: 23 06 2015 Prickle-Prickle, Confusion 28th, Year of Our Lady of Discord 3181
Enter a date (dd mm yyyy) or 0 to quit: 29 02 2016 St. Tib's Day, Year of Our Lady of Discord 3182
Enter a date (dd mm yyyy) or 0 to quit: 05 01 2016 Setting Orange, Chaos 5th, Year of Our Lady of Discord 3182 - Mungday
Enter a date (dd mm yyyy) or 0 to quit: 26 08 2016 Pungenday, Bureaucracy 19th, Year of Our Lady of Discord 3182
Clojure
<lang clojure>(require '[clj-time.core :as tc])
(def seasons ["Chaos" "Discord" "Confusion" "Bureaucracy" "The Aftermath"]) (def weekdays ["Sweetmorn" "Boomtime" "Pungenday" "Prickle-Prickle" "Setting Orange"]) (def year-offset 1166)
(defn leap-year? [year]
(= 29 (tc/number-of-days-in-the-month year 2)))
(defn discordian-day [day leap]
(let [offset (if (and leap (>= day 59)) 1 0)
day-off (- day offset)
day-num (inc (rem day-off 73))
season (seasons (quot day-off 73))
weekday (weekdays (mod day-off 5))]
(if (and (= day 59) (= offset 1))
"St. Tib's Day"
(str weekday ", " season " " day-num))))
(defn discordian-date [year month day]
(let [day-of-year (dec (.getDayOfYear (tc/date-time year month day)))
dday (discordian-day day-of-year (leap-year? year))]
(format "%s, YOLD %s" dday (+ year year-offset))))</lang>
- Output:
user=> (discordian-date 2010 7 22) "Pungenday, Confusion 57, YOLD 3176" user=> (discordian-date 2012 2 28) "Prickle-Prickle, Chaos 59, YOLD 3178" user=> (discordian-date 2012 2 29) "St. Tib's Day, YOLD 3178" user=> (discordian-date 2012 3 1) "Setting Orange, Chaos 60, YOLD 3178" user=> (discordian-date 2012 12 31) "Setting Orange, The Aftermath 73, YOLD 3178" user=> (discordian-date 2013 12 31) "Setting Orange, The Aftermath 73, YOLD 3179"
D
<lang d>import std.stdio, std.datetime, std.conv, std.string;
immutable seasons = ["Chaos", "Discord", "Confusion",
"Bureaucracy", "The Aftermath"],
weekday = ["Sweetmorn", "Boomtime", "Pungenday",
"Prickle-Prickle", "Setting Orange"],
apostle = ["Mungday", "Mojoday", "Syaday",
"Zaraday", "Maladay"],
holiday = ["Chaoflux", "Discoflux", "Confuflux",
"Bureflux", "Afflux"];
string discordianDate(in Date date) pure {
immutable dYear = text(date.year + 1166);
immutable isLeapYear = date.isLeapYear;
if (isLeapYear && date.month == 2 && date.day == 29)
return "St. Tib's Day, in the YOLD " ~ dYear;
immutable doy = (isLeapYear && date.dayOfYear >= 60) ?
date.dayOfYear - 1 :
date.dayOfYear;
immutable dsDay = (doy % 73)==0? 73:(doy % 73); // Season day.
if (dsDay == 5)
return apostle[doy / 73] ~ ", in the YOLD " ~ dYear;
if (dsDay == 50)
return holiday[doy / 73] ~ ", in the YOLD " ~ dYear;
immutable dSeas = seasons[(((doy%73)==0)?doy-1:doy) / 73];
immutable dWday = weekday[(doy - 1) % 5];
return format("%s, day %s of %s in the YOLD %s",
dWday, dsDay, dSeas, dYear);
}
unittest {
assert(Date(2010, 7, 22).discordianDate ==
"Pungenday, day 57 of Confusion in the YOLD 3176");
assert(Date(2012, 2, 28).discordianDate ==
"Prickle-Prickle, day 59 of Chaos in the YOLD 3178");
assert(Date(2012, 2, 29).discordianDate ==
"St. Tib's Day, in the YOLD 3178");
assert(Date(2012, 3, 1).discordianDate ==
"Setting Orange, day 60 of Chaos in the YOLD 3178");
assert(Date(2010, 1, 5).discordianDate ==
"Mungday, in the YOLD 3176");
assert(Date(2011, 5, 3).discordianDate ==
"Discoflux, in the YOLD 3177");
}
void main(string args[]) {
int yyyymmdd, day, mon, year, sign;
if (args.length == 1) {
(cast(Date)Clock.currTime).discordianDate.writeln;
return;
}
foreach (i, arg; args) {
if (i > 0) {
//writef("%d: %s: ", i, arg);
yyyymmdd = to!int(arg);
if (yyyymmdd < 0) {
sign = -1;
yyyymmdd = -yyyymmdd;
}
else {
sign = 1;
}
day = yyyymmdd % 100;
if (day == 0) {
day = 1;
}
mon = ((yyyymmdd - day) / 100) % 100;
if (mon == 0) {
mon = 1;
}
year = sign * ((yyyymmdd - day - 100*mon) / 10000);
writefln("%s", Date(year, mon, day).discordianDate);
}
}
}</lang>
- Output:
$ ./ddate 20100722 20120228 20120229 20120301 20100105 20110503 20151019 00000101 -11660101 Pungenday, day 57 of Confusion in the YOLD 3176 Prickle-Prickle, day 59 of Chaos in the YOLD 3178 St. Tib's Day, in the YOLD 3178 Setting Orange, day 60 of Chaos in the YOLD 3178 Mungday, in the YOLD 3176 Discoflux, in the YOLD 3177 Boomtime, day 73 of Bureaucracy in the YOLD 3181 Sweetmorn, day 1 of Chaos in the YOLD 1166 Sweetmorn, day 1 of Chaos in the YOLD 0
Euphoria
<lang euphoria>function isLeapYear(integer year)
return remainder(year,4)=0 and remainder(year,100)!=0 or remainder(year,400)=0
end function
constant YEAR = 1, MONTH = 2, DAY = 3, DAY_OF_YEAR = 8
constant month_lengths = {31,28,31,30,31,30,31,31,30,31,30,31} function dayOfYear(sequence Date)
integer d
if length(Date) = DAY_OF_YEAR then
d = Date[DAY_OF_YEAR]
else
d = Date[DAY]
for i = Date[MONTH]-1 to 1 by -1 do
d += month_lengths[i]
if i = 2 and isLeapYear(Date[YEAR]) then
d += 1
end if
end for
end if
return d
end function
constant seasons = {"Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"} constant weekday = {"Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle", "Setting Orange"} constant apostle = {"Mungday", "Mojoday", "Syaday", "Zaraday", "Maladay"} constant holiday = {"Chaoflux", "Discoflux", "Confuflux", "Bureflux", "Afflux"}
function discordianDate(sequence Date)
sequence dyear, dseas, dwday
integer leap, doy, dsday
dyear = sprintf("%d",Date[YEAR]+1166)
leap = isLeapYear(Date[YEAR])
if leap and Date[MONTH] = 2 and Date[DAY] = 29 then
return "St. Tib's Day, in the YOLD " & dyear
end if
doy = dayOfYear(Date)
if leap and doy >= 60 then
doy -= 1
end if
dsday = remainder(doy,73)
if dsday = 5 then
return apostle[doy/73+1] & ", in the YOLD " & dyear
elsif dsday = 50 then
return holiday[doy/73+1] & ", in the YOLD " & dyear
end if
dseas = seasons[doy/73+1]
dwday = weekday[remainder(doy-1,5)+1]
return sprintf("%s, day %d of %s in the YOLD %s", {dwday, dsday, dseas, dyear})
end function
sequence today today = date() today[YEAR] += 1900 puts(1, discordianDate(today))</lang>
F#
<lang fsharp>open System
let seasons = [| "Chaos"; "Discord"; "Confusion"; "Bureaucracy"; "The Aftermath" |]
let ddate (date:DateTime) =
let dyear = date.Year + 1166
let leapYear = DateTime.IsLeapYear(date.Year)
if leapYear && date.Month = 2 && date.Day = 29 then
sprintf "St. Tib's Day, %i YOLD" dyear
else
// compensate for St. Tib's Day
let dayOfYear = (if leapYear && date.DayOfYear >= 60 then date.DayOfYear - 1 else date.DayOfYear) - 1
let season, dday = Math.DivRem(dayOfYear, 73)
sprintf "%s %i, %i YOLD" seasons.[season] (dday+1) dyear
[<EntryPoint>] let main argv =
let p = Int32.Parse
Seq.ofArray("2012-02-28 2012-02-29 2012-03-01 2010-07-22 2015-10-19 2015-10-20".Split())
|> Seq.map(fun (s:string) ->
let d = s.Split('-')
(s, DateTime(p(d.[0]),p(d.[1]),p(d.[2]))))
|> Seq.iter(fun (s,d) -> printfn "%s is %s" s (ddate d))
0
</lang>
- Output:
2012-02-28 is Chaos 59, 3178 YOLD 2012-02-29 is St. Tib's Day, 3178 YOLD 2012-03-01 is Chaos 60, 3178 YOLD 2010-07-22 is Confusion 57, 3176 YOLD 2015-10-19 is Bureaucracy 73, 3181 YOLD 2015-10-20 is The Aftermath 1, 3181 YOLD
Go
A package modeled after the time package in the Go standard library <lang go>package ddate
import (
"strconv" "strings" "time"
)
// Predefined formats for DiscDate.Format const (
DefaultFmt = "Pungenday, Discord 5, 3131 YOLD" OldFmt = `Today is Pungenday, the 5th day of Discord in the YOLD 3131
Celebrate Mojoday` )
// Formats passed to DiscDate.Format are protypes for formated dates. // Format replaces occurrences of prototype elements (the constant strings // listed here) with values corresponding to the date being formatted. // If the date is St. Tib's Day, the string from the first date element // through the last is replaced with "St. Tib's Day". const (
protoLongSeason = "Discord" protoShortSeason = "Dsc" protoLongDay = "Pungenday" protoShortDay = "PD" protoOrdDay = "5" protoCardDay = "5th" protoHolyday = "Mojoday" protoYear = "3131"
)
var (
longDay = []string{"Sweetmorn", "Boomtime", "Pungenday",
"Prickle-Prickle", "Setting Orange"}
shortDay = []string{"SM", "BT", "PD", "PP", "SO"}
longSeason = []string{
"Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"}
shortSeason = []string{"Chs", "Dsc", "Cfn", "Bcy", "Afm"}
holyday = [][]string{{"Mungday", "Chaoflux"}, {"Mojoday", "Discoflux"},
{"Syaday", "Confuflux"}, {"Zaraday", "Bureflux"}, {"Maladay", "Afflux"}}
)
type DiscDate struct {
StTibs bool Dayy int // zero based day of year, meaningless if StTibs is true Year int // gregorian + 1166
}
func New(eris time.Time) DiscDate {
t := time.Date(eris.Year(), 1, 1, eris.Hour(), eris.Minute(),
eris.Second(), eris.Nanosecond(), eris.Location())
bob := int(eris.Sub(t).Hours()) / 24
raw := eris.Year()
hastur := DiscDate{Year: raw + 1166}
if raw%4 == 0 && (raw%100 != 0 || raw%400 == 0) {
if bob > 59 {
bob--
} else if bob == 59 {
hastur.StTibs = true
return hastur
}
}
hastur.Dayy = bob
return hastur
}
func (dd DiscDate) Format(f string) (r string) {
var st, snarf string
var dateElement bool
f6 := func(proto, wibble string) {
if !dateElement {
snarf = r
dateElement = true
}
if st > "" {
r = ""
} else {
r += wibble
}
f = f[len(proto):]
}
f4 := func(proto, wibble string) {
if dd.StTibs {
st = "St. Tib's Day"
}
f6(proto, wibble)
}
season, day := dd.Dayy/73, dd.Dayy%73
for f > "" {
switch {
case strings.HasPrefix(f, protoLongDay):
f4(protoLongDay, longDay[dd.Dayy%5])
case strings.HasPrefix(f, protoShortDay):
f4(protoShortDay, shortDay[dd.Dayy%5])
case strings.HasPrefix(f, protoCardDay):
funkychickens := "th"
if day/10 != 1 {
switch day % 10 {
case 0:
funkychickens = "st"
case 1:
funkychickens = "nd"
case 2:
funkychickens = "rd"
}
}
f4(protoCardDay, strconv.Itoa(day+1)+funkychickens)
case strings.HasPrefix(f, protoOrdDay):
f4(protoOrdDay, strconv.Itoa(day+1))
case strings.HasPrefix(f, protoLongSeason):
f6(protoLongSeason, longSeason[season])
case strings.HasPrefix(f, protoShortSeason):
f6(protoShortSeason, shortSeason[season])
case strings.HasPrefix(f, protoHolyday):
if day == 4 {
r += holyday[season][0]
} else if day == 49 {
r += holyday[season][1]
}
f = f[len(protoHolyday):]
case strings.HasPrefix(f, protoYear):
r += strconv.Itoa(dd.Year)
f = f[4:]
default:
r += f[:1]
f = f[1:]
}
}
if st > "" {
r = snarf + st + r
}
return
} </lang> Example program using above package <lang go>package main
import (
"ddate" "fmt" "os" "strings" "time"
)
func main() {
pi := 1
fnord := ddate.DefaultFmt
if len(os.Args) > 1 {
switch os.Args[1][0] {
case '+':
pi++
fnord = os.Args[1][1:]
case '-':
usage()
}
}
var eris time.Time
switch len(os.Args) - pi {
case 0:
eris = time.Now()
case 3:
var err error
eris, err = time.Parse("2 1 2006", strings.Join(os.Args[pi:pi+3], " "))
if err != nil {
fmt.Println(err)
usage()
}
default:
usage()
}
fmt.Println(ddate.New(eris).Format(fnord))
}
func usage() {
fmt.Fprintf(os.Stderr, "usage: %s [+format] [day month year]\n", os.Args[0]) os.Exit(1)
}</lang>
- Output:
> ddate Pungenday, Confusion 62, 3177 YOLD > ddate 29 2 2012 St. Tib's Day, 3178 YOLD
Haskell
<lang haskell>import Data.Time (isLeapYear) import Data.Time.Calendar.MonthDay (monthAndDayToDayOfYear) import Text.Printf (printf)
type Year = Integer type Day = Int type Month = Int
data DDate = DDate Weekday Season Day Year
| StTibsDay Year deriving (Eq, Ord)
data Season = Chaos
| Discord
| Confusion
| Bureaucracy
| TheAftermath
deriving (Show, Enum, Eq, Ord, Bounded)
data Weekday = Sweetmorn
| Boomtime
| Pungenday
| PricklePrickle
| SettingOrange
deriving (Show, Enum, Eq, Ord, Bounded)
instance Show DDate where
show (StTibsDay y) = printf "St. Tib's Day, %d YOLD" y show (DDate w s d y) = printf "%s, %s %d, %d YOLD" (show w) (show s) d y
fromYMD :: (Year, Month, Day) -> DDate fromYMD (y, m, d)
| leap && dayOfYear == 59 = StTibsDay yold | leap && dayOfYear >= 60 = mkDDate $ dayOfYear - 1 | otherwise = mkDDate dayOfYear where yold = y + 1166 dayOfYear = monthAndDayToDayOfYear leap m d - 1 leap = isLeapYear y
mkDDate dayOfYear = DDate weekday season dayOfSeason yold
where
weekday = toEnum $ dayOfYear `mod` 5
season = toEnum $ dayOfYear `div` 73
dayOfSeason = 1 + dayOfYear `mod` 73</lang>
Examples:
<lang haskell>test = mapM_ display dates
where
display d = putStr (show d ++ " -> ") >> print (fromYMD d)
dates = [(2012,2,28)
,(2012,2,29)
,(2012,3,1)
,(2012,3,14)
,(2012,3,15)
,(2010,9,2)
,(2010,12,31)
,(2011,1,1)]</lang>
λ> test (2012,2,28) -> PricklePrickle, Chaos 59, 3178 YOLD (2012,2,29) -> St. Tib's Day, 3178 YOLD (2012,3,1) -> SettingOrange, Chaos 60, 3178 YOLD (2012,3,14) -> Pungenday, Chaos 73, 3178 YOLD (2012,3,15) -> PricklePrickle, Discord 1, 3178 YOLD (2010,9,2) -> SettingOrange, Bureaucracy 26, 3176 YOLD (2010,12,31) -> SettingOrange, TheAftermath 73, 3176 YOLD (2011,1,1) -> Sweetmorn, Chaos 1, 3177 YOLD
In GHCi we can also execute shell commands.
- Using Linux utility ddate
*Main> :! ddate Today is Setting Orange, the 26th day of Bureaucracy in the YOLD 3176 *Main> :! ddate 29 2 2012 Sint Tibs *Main> :! ddate 2 9 2010 Setting Orange, Bureaucracy 26, 3176 YOLD
Icon and Unicon
This version is loosely based on a modified translation of the original ddate.c and like the original the leap year functionality is Julian not Gregorian. <lang Icon>link printf
procedure main()
Demo(2010,1,1) Demo(2010,7,22) Demo(2012,2,28) Demo(2012,2,29) Demo(2012,3,1) Demo(2010,1,5) Demo(2011,5,3) Demo(2012,2,28) Demo(2012,2,29) Demo(2012,3,1) Demo(2010,7,22) Demo(2012,12,22)
end
procedure Demo(y,m,d) #: demo display
printf("%i-%i-%i = %s\n",y,m,d,DiscordianDateString(DiscordianDate(y,m,d)))
end
record DiscordianDateRecord(year,yday,season,sday,holiday)
procedure DiscordianDate(year,month,day) #: Convert normal date to Discordian static cal initial cal := [31,28,31,30,31,30,31,31,30,31,30,31]
ddate := DiscordianDateRecord(year+1166)
every (ddate.yday := day - 1) +:= cal[1 to month-1] # zero origin
ddate.sday := ddate.yday
if ddate.year % 4 = 2 & month = 2 & day = 29 then
ddate.holiday := 1 # Note: st tibs is outside of weekdays
else {
ddate.season := (ddate.yday / 73) + 1
ddate.sday := (ddate.yday % 73) + 1
ddate.holiday := 1 + ddate.season * case ddate.sday of { 5 : 1; 50 : 2}
}
return ddate
end
procedure DiscordianDateString(ddate) #: format a Discordian Date String static days,seasons,holidays initial {
days := ["Sweetmorn","Boomtime","Pungenday","Prickle-Prickle","Setting Orange"]
seasons := ["Chaos","Discord","Confusion","Bureaucracy","The Aftermath"]
holidays := ["St. Tib's Day","Mungday","Chaoflux","Mojoday","Discoflux",
"Syaday","Confuflux","Zaraday","Bureflux","Maladay","Afflux"]
}
return (( holidays[\ddate.holiday] || "," ) |
( days[1+ddate.yday%5] || ", day " ||
ddate.sday || " of " || seasons[ddate.season])) ||
" in the YOLD " || ddate.year
end</lang>
- Output:
2010-1-1 = Sweetmorn, day 1 of Chaos in the YOLD 3176 2010-7-22 = Pungenday, day 57 of Confusion in the YOLD 3176 2012-2-28 = Prickle-Prickle, day 59 of Chaos in the YOLD 3178 2012-2-29 = St. Tib's Day, in the YOLD 3178 2012-3-1 = Setting Orange, day 60 of Chaos in the YOLD 3178 2010-1-5 = Mungday, in the YOLD 3176 2011-5-3 = Discoflux, in the YOLD 3177 2012-2-28 = Prickle-Prickle, day 59 of Chaos in the YOLD 3178 2012-2-29 = St. Tib's Day, in the YOLD 3178 2012-3-1 = Setting Orange, day 60 of Chaos in the YOLD 3178 2010-7-22 = Pungenday, day 57 of Confusion in the YOLD 3176 2012-12-22 = Sweetmorn, day 64 of The Aftermath in the YOLD 3178
J
<lang j>require'dates' leap=: _1j1 * 0 -/@:= 4 100 400 |/ {.@] bs=: ((#:{.) + 0 j. *@[ * {:@]) +. disc=: ((1+0 73 bs[ +^:(58<]) -/@todayno@(,: 1 1,~{.)@]) ,~1166+{.@])~ leap</lang>
Example use:
<lang> disc 2012 2 28 3178 1 59
disc 2012 2 29
3178 1 59j1
disc 2012 3 1
3178 1 60j1
disc 2012 12 31
3178 5 73j1
disc 2013 1 1
3179 1 1
disc 2100 12 31
3266 5 73
disc 2015 10 19
3181 4 73
disc 2000 3 13
3166 1 72j1</lang>
see talk page. But, in essence, this version uses season ordinals with a single imaginary day after the 59th of the first season, on leap years. This is implemented so that that imaginary day has been passed for all remaining days of a leap year.
Java
<lang java>import java.util.Calendar; import java.util.GregorianCalendar;
public class DiscordianDate {
final static String[] seasons = {"Chaos", "Discord", "Confusion",
"Bureaucracy", "The Aftermath"};
final static String[] weekday = {"Sweetmorn", "Boomtime", "Pungenday",
"Prickle-Prickle", "Setting Orange"};
final static String[] apostle = {"Mungday", "Mojoday", "Syaday",
"Zaraday", "Maladay"};
final static String[] holiday = {"Chaoflux", "Discoflux", "Confuflux",
"Bureflux", "Afflux"};
public static String discordianDate(final GregorianCalendar date) {
int y = date.get(Calendar.YEAR);
int yold = y + 1166;
int dayOfYear = date.get(Calendar.DAY_OF_YEAR);
if (date.isLeapYear(y)) {
if (dayOfYear == 60)
return "St. Tib's Day, in the YOLD " + yold;
else if (dayOfYear > 60)
dayOfYear--;
}
dayOfYear--;
int seasonDay = dayOfYear % 73 + 1;
if (seasonDay == 5)
return apostle[dayOfYear / 73] + ", in the YOLD " + yold;
if (seasonDay == 50)
return holiday[dayOfYear / 73] + ", in the YOLD " + yold;
String season = seasons[dayOfYear / 73];
String dayOfWeek = weekday[dayOfYear % 5];
return String.format("%s, day %s of %s in the YOLD %s",
dayOfWeek, seasonDay, season, yold);
}
public static void main(String[] args) {
System.out.println(discordianDate(new GregorianCalendar()));
test(2010, 6, 22, "Pungenday, day 57 of Confusion in the YOLD 3176");
test(2012, 1, 28, "Prickle-Prickle, day 59 of Chaos in the YOLD 3178");
test(2012, 1, 29, "St. Tib's Day, in the YOLD 3178");
test(2012, 2, 1, "Setting Orange, day 60 of Chaos in the YOLD 3178");
test(2010, 0, 5, "Mungday, in the YOLD 3176");
test(2011, 4, 3, "Discoflux, in the YOLD 3177");
test(2015, 9, 19, "Boomtime, day 73 of Bureaucracy in the YOLD 3181");
}
private static void test(int y, int m, int d, final String result) {
assert (discordianDate(new GregorianCalendar(y, m, d)).equals(result));
}
}</lang>
- Output:
Setting Orange, day 4 of Confusion in the YOLD 3180
JavaScript
<lang javascript> /**
* All Hail Discordia! - this script prints Discordian date using system date. * * lang: JavaScript * author: jklu * contributors: JamesMcGuigan * * changelog: * - Modified to return same output syntax as unix ddate + module.exports - James McGuigan, 2/Chaos/3183 * * source: https://rosettacode.org/wiki/Discordian_date#JavaScript */
var seasons = [
"Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"
]; var weekday = [
"Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle", "Setting Orange"
];
var apostle = [
"Mungday", "Mojoday", "Syaday", "Zaraday", "Maladay"
];
var holiday = [
"Chaoflux", "Discoflux", "Confuflux", "Bureflux", "Afflux"
];
Date.prototype.isLeapYear = function() {
var year = this.getFullYear();
if( (year & 3) !== 0 ) { return false; }
return ((year % 100) !== 0 || (year % 400) === 0);
};
// Get Day of Year Date.prototype.getDOY = function() {
var dayCount = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
var mn = this.getMonth();
var dn = this.getDate();
var dayOfYear = dayCount[mn] + dn;
if( mn > 1 && this.isLeapYear() ) { dayOfYear++; }
return dayOfYear;
};
Date.prototype.isToday = function() {
var today = new Date();
return this.getDate() === today.getDate()
&& this.getMonth() === today.getMonth()
&& this.getFullYear() === today.getFullYear()
;
};
function discordianDate(date) {
if( !date ) { date = new Date(); }
var y = date.getFullYear(); var yold = y + 1166; var dayOfYear = date.getDOY(); var celebrateHoliday = null;
if( date.isLeapYear() ) {
if( dayOfYear == 60 ) {
celebrateHoliday = "St. Tib's Day";
}
else if( dayOfYear > 60 ) {
dayOfYear--;
}
}
dayOfYear--;
var divDay = Math.floor(dayOfYear / 73);
var seasonDay = (dayOfYear % 73) + 1;
if( seasonDay == 5 ) {
celebrateHoliday = apostle[divDay];
}
if( seasonDay == 50 ) {
celebrateHoliday = holiday[divDay];
}
var season = seasons[divDay]; var dayOfWeek = weekday[dayOfYear % 5];
var nth = (seasonDay % 10 == 1) ? 'st'
: (seasonDay % 10 == 2) ? 'nd'
: (seasonDay % 10 == 3) ? 'rd'
: 'th';
return "" //(date.isToday() ? "Today is " : )
+ dayOfWeek
+ ", the " + seasonDay + nth
+ " day of " + season
+ " in the YOLD " + yold
+ (celebrateHoliday ? ". Celebrate " + celebrateHoliday + "!" : )
;
}
function test(y, m, d, result) {
console.assert((discordianDate(new Date(y, m, d)) == result), [y, m, d, discordianDate(new Date(y, m, d)), result]);
}
// Only run test code if node calls this file directly if( require.main === module ) {
console.log(discordianDate(new Date(Date.now()))); test(2010, 6, 22, "Pungenday, the 57th day of Confusion in the YOLD 3176"); test(2012, 1, 28, "Prickle-Prickle, the 59th day of Chaos in the YOLD 3178"); test(2012, 1, 29, "Setting Orange, the 60th day of Chaos in the YOLD 3178. Celebrate St. Tib's Day!"); test(2012, 2, 1, "Setting Orange, the 60th day of Chaos in the YOLD 3178"); test(2010, 0, 5, "Setting Orange, the 5th day of Chaos in the YOLD 3176. Celebrate Mungday!"); test(2011, 4, 3, "Pungenday, the 50th day of Discord in the YOLD 3177. Celebrate Discoflux!"); test(2015, 9, 19, "Boomtime, the 73rd day of Bureaucracy in the YOLD 3181");
}
module.exports = discordianDate; </lang>
Example use:
<lang javascript> console.log(discordianDate(new Date(Date.now()))); "Boomtime, the 2nd day of Chaos in the YOLD 3183" </lang>
look at calendar; learn about holydays
JotaCode
<lang jotacode>@print(
"Today is ",
@let(1,@add(@switch(@time("mon"),
0,-1,
1,30,
2,58,
3,89,
4,119,
5,150,
6,180,
7,211,
8,242,
9,272,
10,303,
11,333)
,@time("mday")),@switch(@print(@time("mon"),"/",@time("mday")),
"1/29","St. Tib's Day",
@print(@switch(@mod("%1",5),
0,"Sweetmorn",
1,"Boomtime",
2,"Pungenday",
3,"Prickle-Prickle",
4,"Setting Orange"),
", ",
@switch(@idiv("%1",73),
0,"Chaos",
1,"Discord",
2,"Confusion",
3,"Bureaucracy",
4,"The Aftermath"),
" ",
@add(@mod("%1",73),1),
", YOLD ",
@add(@time("year"),3066))
)),".")</lang>
Julia
<lang julia># v0.6.0 using Dates
function discordiandate(year::Integer, month::Integer, day::Integer)
const DISCORDIANSEASONS = ["Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"]
const HOLIDAYS = Dict(
"Chaos 5" => "Mungday",
"Chaos 50" => "Chaoflux",
"Discord 5" => "Mojoday",
"Discord 50" => "Discoflux",
"Confusion 5" => "Syaday",
"Confusion 50" => "Confuflux",
"Bureaucracy 5" => "Zaraday",
"Bureaucracy 50" => "Bureflux",
"The Aftermath 5" => "Maladay",
"The Aftermath 50" => "Afflux",
)
today = Date(year, month, day)
isleap = isleapyear(year)
if isleap && month == 2 && day == 29
rst = "St. Tib's Day, YOLD " * string(year + 1166)
else
dy = dayofyear(today)
if isleap && dy >= 60
dy -= 1
end
dday = string(DISCORDIANSEASONS[div(dy, 73) + 1], " ", rem(dy, 73))
if haskey(HOLIDAYS, dday)
rst = dday * " ($(HOLIDAYS[dday])), YOLD $(year + 1166)"
else
rst = dday * ", YOLD $(year + 1166)"
end
end
return rst
end
@show discordiandate(2017, 08, 15) @show discordiandate(1996, 02, 29) @show discordiandate(1996, 02, 19) </lang>
- Output:
discordiandate(2017, 8, 15) = "Bureaucracy 8, YOLD 3183" discordiandate(1996, 2, 29) = "St. Tib's Day, YOLD 3162" discordiandate(1996, 2, 19) = "Chaos 50 (Chaoflux), YOLD 3162"
Kotlin
<lang scala>import java.util.Calendar import java.util.GregorianCalendar
enum class Season {
Chaos, Discord, Confusion, Bureaucracy, Aftermath;
companion object { fun from(i: Int) = values()[i / 73] }
} enum class Weekday {
Sweetmorn, Boomtime, Pungenday, Prickle_Prickle, Setting_Orange;
companion object { fun from(i: Int) = values()[i % 5] }
} enum class Apostle {
Mungday, Mojoday, Syaday, Zaraday, Maladay;
companion object { fun from(i: Int) = values()[i / 73] }
} enum class Holiday {
Chaoflux, Discoflux, Confuflux, Bureflux, Afflux;
companion object { fun from(i: Int) = values()[i / 73] }
}
fun GregorianCalendar.discordianDate(): String {
val y = get(Calendar.YEAR) val yold = y + 1166
var dayOfYear = get(Calendar.DAY_OF_YEAR)
if (isLeapYear(y)) {
if (dayOfYear == 60)
return "St. Tib's Day, in the YOLD " + yold
else if (dayOfYear > 60)
dayOfYear--
}
val seasonDay = --dayOfYear % 73 + 1
return when (seasonDay) {
5 -> "" + Apostle.from(dayOfYear) + ", in the YOLD " + yold
50 -> "" + Holiday.from(dayOfYear) + ", in the YOLD " + yold
else -> "" + Weekday.from(dayOfYear) + ", day " + seasonDay + " of " + Season.from(dayOfYear) + " in the YOLD " + yold
}
}
internal fun test(y: Int, m: Int, d: Int, result: String) {
assert(GregorianCalendar(y, m, d).discordianDate() == result)
}
fun main(args: Array<String>) {
println(GregorianCalendar().discordianDate())
test(2010, 6, 22, "Pungenday, day 57 of Confusion in the YOLD 3176") test(2012, 1, 28, "Prickle-Prickle, day 59 of Chaos in the YOLD 3178") test(2012, 1, 29, "St. Tib's Day, in the YOLD 3178") test(2012, 2, 1, "Setting Orange, day 60 of Chaos in the YOLD 3178") test(2010, 0, 5, "Mungday, in the YOLD 3176") test(2011, 4, 3, "Discoflux, in the YOLD 3177") test(2015, 9, 19, "Boomtime, day 73 of Bureaucracy in the YOLD 3181")
}</lang>
Maple
<lang maple>convertDiscordian := proc(year, month, day) local days31, days30, daysThisYear, i, dYear, dMonth, dDay, seasons, week, dayOfWeek; days31 := [1, 3, 5, 7, 8, 10, 12]; days30 := [4, 6, 9, 11]; if month < 1 or month >12 then error "Invalid month: %1", month; end if; if (member(month, days31) and day > 31) or (member(month, days30) and day > 30) or (month = 2 and day > 29) or day < 1 then error "Invalid date: %1", day; end if; dYear := year + 1166; if month = 2 and day = 29 then printf("The date is St. Tib's Day, YOLD %a.\n", dYear); else seasons := ["Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"]; week := ["Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle", "Setting Orange"]; daysThisYear := 0; for i to month-1 do if member(i, days31) then daysThisYear := daysThisYear + 31; elif member(i, days30) then daysThisYear := daysThisYear + 30; else daysThisYear := daysThisYear + 28; end if; end do; daysThisYear := daysThisYear + day -1; dMonth := seasons[trunc((daysThisYear) / 73)+1]; dDay := daysThisYear mod 73 +1; dayOfWeek := week[daysThisYear mod 5 +1]; printf("The date is %s %s %s, YOLD %a.\n", dayOfWeek, dMonth, convert(dDay, ordinal), dYear); end if; end proc:
convertDiscordian (2016, 1, 1); convertDiscordian (2016, 2, 29); convertDiscordian (2016, 12, 31);</lang>
- Output:
The date is Sweetmorn Chaos first, YOLD 3182. The date is St. Tib's Day, YOLD 3182. The date is Setting Orange The Aftermath 73rd, YOLD 3182.
Mathematica / Wolfram Language
<lang Mathematica>DiscordianDate[y_, m_, d_] := Module[{year = ToString[y + 1166], month = m, day = d},
DMONTHS = {"Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"};
DDAYS = {"Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle", "Setting Orange"};
DayOfYear = DateDifference[{y} ,{y, m, d}] + 1;
LeapYearQ = (Mod[#, 4]== 0 && (Mod[#, 100] != 0 || Mod[#, 400] == 0))&@ y;
If [ LeapYearQ && month == 2 && day == 29,
Print["Today is St. Tib's Day, YOLD ", ]
,
If [ LeapYearQ && DayOfYear >= 60, DayOfYear -= 1 ];
{season, dday} = {Quotient[DayOfYear, 73], Mod[DayOfYear, 73]};
Print["Today is ", DDAYS[[Mod[dday,4] + 1]],", ",DMONTHSseason+1," ",dday,", YOLD ",year]
];
]</lang>
- Output:
DiscordianDate[2012,2,28] -> Today is Prickle-Prickle, Chaos 59, YOLD 3178 DiscordianDate[2012,2,29] -> Today is St. Tib's Day, YOLD 3178 DiscordianDate[2012,3,1] -> Today is Setting Orange, Chaos 60, YOLD 3178
Pascal
<lang Pascal> program ddate; { This program is free software, it's done it's time and paid for it's crime. You can copy, edit and use this software under the terms of the GNU GPL v3 or later.
Copyright Pope Englebert Finklestien, On this day Boomtime, the 71st day of Confusion in the YOLD 3183
This program will print out the current date in Erisian format as specified in
P R I N C I P I A D I S C O R D I A
If you run it with a date it the command line in european format (dd mm yy) it will print the equvolent Discordian date. If you omit the year and month the current Anerisiean month and year as assumed.
POPE Englebert Finklestien.
}
uses Sysutils;
var
YY,MM,DD : word; YOLD : Boolean; Hedgehog: integer; Eris: string; snub: string; chaotica: string; midget: string; bob: string;
Anerisiandaysinmonth: array[1..12] of integer = (31,28,31,30,31,30,31,31,30,31,30,31);
procedure anerisiandate; { tHIS JUST GETS THE DATE INTO THE DD,MM,YY VARIABLES } begin
DeCodeDate(date,yy,mm,dd);
end;
procedure BORIS; { This just tests to see if we are in a leap year } var
snafu : boolean;
begin
snafu := False; if (yy mod 4 = 0) then snafu := True; if ((yy mod 100 = 0) and (yy mod 400 <> 0)) then snafu := False; if ((snafu) and (mm = 2 ) and (dd=29)) then YOLD := True;
end;
function hodgepodge: integer; { This returns the total number of days since the year began. It doesn't bother with leap years at all. I get a wierd optical illusion looking at the until in this } var
fnord : integer;
begin
Hedgehog := 1;
hodgepodge := 0;
fnord :=0;
if (mm > 1) then repeat
fnord := fnord + Anerisiandaysinmonth[Hedgehog];
Hedgehog := Hedgehog +1;
until Hedgehog = mm;
fnord := fnord + dd;
hodgepodge := fnord;
end;
function treesaregreen(): string;
{Returns the YOLD as a string}
begin
treesaregreen := IntTOStr(yy+1166);
end;
procedure GRAYFACE;
{This calculates everything, but does not bother much about leap years}
var
wrestle: integer; Thwack: string;
begin
Hedgehog := hodgepodge;
wrestle := 0;
Thwack := 'th';
{set bob to the name of the holyday or St. Tibs day }
bob := 'St. Tibs Day';
if (Hedgehog = 5 ) then bob := 'Mungday';
if (Hedgehog = 50 ) then bob := 'Chaoflux';
if (Hedgehog = 78 ) then bob := 'Mojoday';
if (Hedgehog = 123) then bob := 'Discoflux';
if (Hedgehog = 151) then bob := 'Syaday';
if (Hedgehog = 196) then bob := 'Confuflux';
if (Hedgehog = 224) then bob := 'Zaraday';
if (Hedgehog = 269) then bob := 'Bureflux';
if (Hedgehog = 297) then bob := 'Maladay';
if (Hedgehog = 342) then bob := 'Afflux';
{Not doing things the usual way
Lets find the week day and count the number of
5 day weeks all at the same time}
while (Hedgehog > 5) do begin
Hedgehog := Hedgehog -5;
wrestle := Wrestle + 1;
end;
if (Hedgehog = 1) then snub := 'Sweetmorn' ;
if (Hedgehog = 2) then snub := 'BoomTime';
if (Hedgehog = 3) then snub := 'Pungenday';
if (Hedgehog = 4) then snub := 'Prickle-Prickle';
if (Hedgehog = 5) then snub := 'Setting Orange';
{Now to set the Season name}
chaotica:='The Aftermath'; if (wrestle <=57) then chaotica := 'Bureaucracy'; if ((wrestle = 58) and (Hedgehog < 3)) then chaotica := 'Bureaucracy'; if (wrestle <= 42) then chaotica := 'Confusion'; if ((wrestle = 43) and (Hedgehog < 5)) then chaotica := 'Confusion'; if (wrestle <=28) then chaotica := 'Discord'; if ((wrestle = 29) and (Hedgehog < 2)) then chaotica := 'Discord'; if (wrestle <=13) then chaotica := 'Chaos'; if ((wrestle = 14) and (Hedgehog < 4)) then chaotica := 'Chaos';
{Now all we need the day of the season}
wrestle := (wrestle*5)+Hedgehog; while (wrestle >73) do wrestle := wrestle -73;
{pick the appropriate day postfix, allready set to th}
if (wrestle in [1,21,31,41,51,61,71]) then Thwack:='st'; if (wrestle in [2,22,32,42,52,62,72]) then Thwack:='nd'; if (wrestle in [3,23,33,43,53,63,73]) then Thwack:='rd';
{Check to see if it is a holy day, if so bob will have the right holyday name already, including St Tibs Day}
if (wrestle in [5,50]) then YOLD := True;
{I love this line of code}
midget := IntToStr(wrestle) + Thwack;
end;
{The main program starts here}
begin
anerisiandate; if (ParamCount >=1) then dd := StrTOInt(ParamStr(1)); if (ParamCount >=2) then mm := StrToInt(ParamStr(2)); if (ParamCount =3) then yy := StrToInt(ParamStr(3)); BORIS; GRAYFACE;
{ The only thing to bother about is holy days and St Tibs day }
Eris := 'Today is: ' + snub +' the ' + midget +' day of the season of ' + chaotica; if (YOLD) then begin
Eris := 'Celebrate for today, ' + snub + ' the ' + midget + ' day of ' +chaotica + ' is the holy day of ' + bob;
end;
{The only place we deal with St. Tibs Day}
if ((YOLD) and ((mm=2) and (dd=29))) then Eris := 'Celebrate ' + bob + ' Chaos';
{This next line applies to all possibilities}
Eris := Eris + ' YOLD ' + treesaregreen; WriteLn(Eris);
end. </lang>
- Output:
./ddate Today is: Setting Orange the 1st day of the season of The Aftermath YOLD 3183 ./ddate 12 Celebrate for today, Prickle-Prickle the 5th day of The Aftermath is the holy day of Zaraday YOLD 3183 ./ddate 13 5 Today is: Pungenday the 60th day of the season of Confusion YOLD 3183 ./ddate 29 2 2020 Celebrate St. Tibs Day Chaos YOLD 3186
Perl
<lang perl>use 5.010; use strict; use warnings; use Time::Piece ();
my @seasons = (qw< Chaos Discord Confusion Bureaucracy >, 'The Aftermath'); my @week_days = (qw< Sweetmorn Boomtime Pungenday Prickle-Prickle >, 'Setting Orange');
sub ordinal { my ($n) = @_; return $n . "th" if int($n/10) == 1; return $n . ((qw< th st nd rd th th th th th th>)[$n % 10]); }
sub ddate { my $d = Time::Piece->strptime( $_[0], '%Y-%m-%d' ); my $yold = 'in the YOLD ' . ($d->year + 1166);
my $day_of_year0 = $d->day_of_year;
if( $d->is_leap_year ) { return "St. Tib's Day, $yold" if $d->mon == 2 and $d->mday == 29; $day_of_year0-- if $day_of_year0 >= 60; # Compensate for St. Tib's Day }
my $weekday = $week_days[ $day_of_year0 % @week_days ]; my $season = $seasons[ $day_of_year0 / 73 ]; my $season_day = ordinal( $day_of_year0 % 73 + 1 );
return "$weekday, the $season_day day of $season $yold"; }
say "$_ is " . ddate($_) for qw< 2010-07-22 2012-02-28 2012-02-29 2012-03-01 >; </lang>
- Output:
2010-07-22 is Pungenday, the 57th day of Confusion in the YOLD 3176 2012-02-28 is Prickle-Prickle, the 59th day of Chaos in the YOLD 3178 2012-02-29 is St. Tib's Day, in the YOLD 3178 2012-03-01 is Setting Orange, the 60th day of Chaos in the YOLD 3178
Perl 6
<lang perl6>my @seasons = << Chaos Discord Confusion Bureaucracy 'The Aftermath' >>; my @days = << Sweetmorn Boomtime Pungenday Prickle-Prickle 'Setting Orange' >>; sub ordinal ( Int $n ) { $n ~ ( $n % 100 == 11|12|13
?? 'th' !! < th st nd rd th th th th th th >[$n % 10] ) }
sub ddate ( Str $ymd ) {
my $d = DateTime.new: "{$ymd}T00:00:00Z" or die;
my $yold = 'in the YOLD ' ~ $d.year + 1166;
my $day_of_year0 = $d.day-of-year - 1;
if $d.is-leap-year {
return "St. Tib's Day, $yold" if $d.month == 2 and $d.day == 29;
$day_of_year0-- if $day_of_year0 >= 60; # Compensate for St. Tib's Day
}
my $weekday = @days[ $day_of_year0 mod 5 ]; my $season = @seasons[ $day_of_year0 div 73 ]; my $season_day = ordinal( $day_of_year0 mod 73 + 1 );
return "$weekday, the $season_day day of $season $yold";
}
say "$_ is {.&ddate}" for < 2010-07-22 2012-02-28 2012-02-29 2012-03-01 >; </lang>
- Output:
2010-07-22 is Pungenday, the 57th day of Confusion in the YOLD 3176 2012-02-28 is Prickle-Prickle, the 59th day of Chaos in the YOLD 3178 2012-02-29 is St. Tib's Day, in the YOLD 3178 2012-03-01 is Setting Orange, the 60th day of Chaos in the YOLD 3178
Phix
<lang Phix>constant seasons = {"Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"} constant weekday = {"Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle", "Setting Orange"} constant apostle = {"Mungday", "Mojoday", "Syaday", "Zaraday", "Maladay"} constant holiday = {"Chaoflux", "Discoflux", "Confuflux", "Bureflux", "Afflux"}
function discordianDate(sequence dt) string dyear, dseas, dwday integer leap, doy, dsday,dseason integer {y,m,d} = dt
dyear = sprintf("%d",y+1166)
leap = isleapyear(y)
if leap and m=2 and d=29 then
return "St. Tib's Day, in the YOLD " & dyear
end if
doy = day_of_year(y,m,d)-1
if leap and doy>=60 then
doy -= 1
end if
dsday = remainder(doy,73)+1
dseason = floor(doy/73+1)
if dsday=5 then
return apostle[dseason] & ", in the YOLD " & dyear
elsif dsday=50 then
return holiday[dseason] & ", in the YOLD " & dyear
end if
dseas = seasons[dseason]
dwday = weekday[remainder(doy,5)+1]
return sprintf("%s, day %d of %s in the YOLD %s", {dwday, dsday, dseas, dyear})
end function</lang> test code <lang Phix>sequence dt = {2015,1,1,0,0,0,0,0} include timedate.e atom oneday = timedelta(days:=1) set_timedate_formats({"DD/MM/YYYY: "}) for i=1 to 5 do
?format_timedate(dt)&discordianDate(dt) dt = adjust_timedate(dt,oneday*72) ?format_timedate(dt)&discordianDate(dt) dt = adjust_timedate(dt,oneday)
end for</lang>
- Output:
"01/01/2015: Sweetmorn, day 1 of Chaos in the YOLD 3181" "14/03/2015: Pungenday, day 73 of Chaos in the YOLD 3181" "15/03/2015: Prickle-Prickle, day 1 of Discord in the YOLD 3181" "26/05/2015: Sweetmorn, day 73 of Discord in the YOLD 3181" "27/05/2015: Boomtime, day 1 of Confusion in the YOLD 3181" "07/08/2015: Prickle-Prickle, day 73 of Confusion in the YOLD 3181" "08/08/2015: Setting Orange, day 1 of Bureaucracy in the YOLD 3181" "19/10/2015: Boomtime, day 73 of Bureaucracy in the YOLD 3181" "20/10/2015: Pungenday, day 1 of The Aftermath in the YOLD 3181" "31/12/2015: Setting Orange, day 73 of The Aftermath in the YOLD 3181"
PHP
<lang PHP><?php // Discordian dating machine. Accepts date from PHP function date() or from the URL. // The Discordian calendar has 5 days in a week, 73 days in a month and 5 months in a year. // Ex. ddate.php will generate todays date according to your computer // Ex. ddate.php?y=2012&m=2&y=29 will generate the date for Feb. 29, 2012
$DAYS = array("Sweetmorn","Boomtime","Pungenday","Prickle-Prickle","Setting Orange"); $MONTHS = array("Chaos","Discord","Confusion","Bureaucracy","The Aftermath");
// If user passed year, month and day variables in URL if(isset($_GET['y']) && isset($_GET['m']) && isset($_GET['d'])) { // Get year, month and day from URL $usery = $_GET['y']; $userm = $_GET['m']; $userd = $_GET['d']; // Use unix time to calculate day of year starting at zero $userdate = mktime(0,0,0,$userm,$userd,$usery); $ddays = ($userdate - mktime(0,0,0,1,1,$usery)) / 86400; // Calculates the Discordian year, month and day $dyear = ($usery) + 1166; $dmonth = $MONTHS[$dday/73]; $dday = $ddays%73 + 1; } // If user didn't pass year, get date from PHP function else { // Create array containing current Gregorian year, month, day, // days of year starting at zero and whether or not year is a leap $date = explode(" ",date('Y n j z L')); // Calculates the Discordian year, month and day $dyear = $date[0]+1166; $dmonth = $MONTHS[$date[3]/73]; $dday = $date[3]%73 +1; } // Determine the name of the day if ($ddays === NULL) { $ddayname= $DAYS[$date[3]%5]; } else { $ddayname= $DAYS[$ddays%5]; }
// Leap year exception for date from PHP if ($ddays === NULL) { if ($date[4]) { if ($date[1] == 2 && $date[2] == 29) { echo "Today is St. Tib's Day, YOLD " . $dyear; } if ($date[3] >= 60) { //offset day by one if leap year $dday -= 1; if($dday % 5 == 0) $ddayname = $DAYS[4]; else $ddayname = $DAYS[($dday%5)]; } } // Display Discordian date echo "Today is " . $ddayname . ", " . $dmonth . " " . $dday . ", YOLD " . $dyear; } else { // Leap year exception for date from URL if ($usery % 100 == 0) { // leap year exception for years that are divisible by one hundred if ($usery % 400 == 0 && $userm == 2 && $userd == 29) { echo "Today is St. Tib's Day, YOLD " . $dyear; } } else if ($usery % 4 == 0) { // if the year is a leap year
if ($userm == 2 && $userd == 29) { echo "Today is St. Tib's Day, YOLD " . $dyear; }
elseif ($ddays >= 60) { // offset day by one if leap year $dday -=1; if($dday % 5 == 0) $ddayname = $DAYS[4]; else $ddayname=$DAYS[($dday%5-1)]; echo "Today is " . $ddayname . ", " . $dmonth . " " . $dday . ", YOLD " . $dyear; } else { echo "Today is " . $ddayname . ", " . $dmonth . " " . $dday . ", YOLD " . $dyear; } } // Display Discordian date else { echo "Today is " . $ddayname . ", " . $dmonth . " " . $dday . ", YOLD " . $dyear; } } ?> </lang>
- Output:
ddate.php #23 November 2011 Today is Boomtime, The Aftermath 35, YOLD 3177 ddate.php?y=2012&m=2&y=28 Today is Prickle-Prickle, Chaos 59, YOLD 3178 ddate.php?y=2012&m=2&y=29 Today is St. Tib's Day, YOLD 3178 ddate.php?y=2012&m=3&y=1 Today is Setting Orange, Chaos 60, YOLD 3178
PicoLisp
<lang PicoLisp>(de disdate (Year Month Day)
(let? Date (date Year Month Day)
(let (Leap (date Year 2 29) D (- Date (date Year 1 1)))
(if (and Leap (= 2 Month) (= 29 Day))
(pack "St. Tib's Day, YOLD " (+ Year 1166))
(and Leap (>= D 60) (dec 'D))
(pack
(get
'("Chaos" "Discord" "Confusion" "Bureaucracy" "The Aftermath")
(inc (/ D 73)) )
" "
(inc (% D 73))
", YOLD "
(+ Year 1166) ) ) ) ) )</lang>
Pike
Pike includes a Discordian calendar. dates can be converted from any calendar to any other. <lang Pike>> Calendar.Discordian.now()->format_ext_ymd();
Result: "Pungenday, 59 Bureaucracy 3177"
> Calendar.Discordian.Day(Calendar.Day(2011,11,11))->format_ext_ymd();
Result: "Setting Orange, 23 The Aftermath 3177"
> Calendar.Discordian.Day(Calendar.Badi.Day(168,13,9))->format_ext_ymd();
Result: "Setting Orange, 23 The Aftermath 3177"
> Calendar.Day((Calendar.Discordian.Month()+1)->day(1));
Result: Day(Thu 20 Oct 2011)</lang>
PowerBASIC
<lang powerbasic>#COMPILE EXE
- DIM ALL
'change this for systems that use a different character $DATESEP = "-"
FUNCTION day(date AS STRING) AS LONG
'date is same format as date$ DIM tmpdash1 AS LONG, tmpdash2 AS LONG tmpdash1 = INSTR(date, $DATESEP) tmpdash2 = INSTR(-1, date, $DATESEP) FUNCTION = VAL(MID$(date, tmpdash1 + 1, tmpdash2 - tmpdash1 - 1))
END FUNCTION
FUNCTION month(date AS STRING) AS LONG
'date is same format as date$ DIM tmpdash AS LONG tmpdash = INSTR(date, $DATESEP) FUNCTION = VAL(LEFT$(date, tmpdash - 1))
END FUNCTION
FUNCTION year(date AS STRING) AS LONG
'date is same format as date$ DIM tmpdash AS LONG tmpdash = INSTR(-1, date, $DATESEP) FUNCTION = VAL(MID$(date, tmpdash + 1))
END FUNCTION
FUNCTION julian(date AS STRING) AS LONG
'date is same format as date$ 'doesn't account for leap years (not needed for ddate) 'days preceding 1st of month ' jan feb mar apr may jun jul aug sep oct nov dec DATA 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 FUNCTION = VAL(READ$(month(date))) + day(date)
END FUNCTION
FUNCTION PBMAIN () AS LONG
'Season names DATA "Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath" 'Weekdays DATA "Setting Orange", "Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle"
DIM dyear AS LONG, dseason AS STRING, dday AS LONG, dweekday AS STRING DIM tmpdate AS STRING, jday AS LONG, result AS STRING
IF LEN(COMMAND$) THEN
tmpdate = COMMAND$
ELSE
tmpdate = DATE$
END IF
dyear = year(tmpdate) + 1166
IF (2 = month(tmpdate)) AND (29 = day(tmpdate)) THEN
result = "Saint Tib's Day, " & STR$(dyear) & " YOLD"
ELSE
jday = julian(tmpdate)
dseason = READ$((jday \ 73) + 1)
dday = (jday MOD 73)
IF 0 = dday THEN dday = 73
dweekday = READ$((jday MOD 5) + 6)
result = dweekday & ", " & dseason & " " & TRIM$(STR$(dday)) & ", " & TRIM$(STR$(dyear)) & " YOLD"
END IF
? result
END FUNCTION</lang>
PowerShell
<lang powershell> function ConvertTo-Discordian ( [datetime]$GregorianDate ) { $DayOfYear = $GregorianDate.DayOfYear $Year = $GregorianDate.Year + 1166 If ( [datetime]::IsLeapYear( $GregorianDate.Year ) -and $DayOfYear -eq 60 )
{ $Day = "St. Tib's Day" }
Else
{
If ( [datetime]::IsLeapYear( $GregorianDate.Year ) -and $DayOfYear -gt 60 )
{ $DayOfYear-- }
$Weekday = @( 'Sweetmorn', 'Boomtime', 'Pungenday', 'Prickle-Prickle', 'Setting Orange' )[(($DayOfYear - 1 ) % 5 )]
$Season = @( 'Chaos', 'Discord', 'Confusion', 'Bureaucracy', 'The Aftermath' )[( [math]::Truncate( ( $DayOfYear - 1 ) / 73 ) )]
$DayOfSeason = ( $DayOfYear - 1 ) % 73 + 1
$Day = "$Weekday, $Season $DayOfSeason"
}
$DiscordianDate = "$Day, $Year YOLD" return $DiscordianDate }
ConvertTo-Discordian ([datetime]'1/5/2016') ConvertTo-Discordian ([datetime]'2/29/2016') ConvertTo-Discordian ([datetime]'12/8/2016') </lang>
- Output:
Setting Orange, Chaos 5, 3182 YOLD St. Tib's Day, 3182 YOLD Boomtime, The Aftermath 50, 3182 YOLD
PureBasic
<lang PureBasic>Procedure.s Discordian_Date(Y, M, D)
Protected DoY=DayOfYear(Date(Y,M,D,0,0,0)), Yold$=Str(Y+1166)
Dim S.s(4)
S(0)="Chaos": S(1)="Discord": S(2)="Confusion": S(3)="Bureaucracy"
S(4)="The Aftermath"
If (Y%4=0 And Y%100) Or Y%400=0
If M=2 And D=29
ProcedureReturn "St. Tib's Day, YOLD " + Yold$
ElseIf DoY>=2*30
DoY-1
EndIf
EndIf
ProcedureReturn S(DoY/73)+" "+Str(DoY%73)+", Yold "+Yold$
EndProcedure</lang>
Python
<lang python>import datetime, calendar
DISCORDIAN_SEASONS = ["Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"]
def ddate(year, month, day):
today = datetime.date(year, month, day)
is_leap_year = calendar.isleap(year)
if is_leap_year and month == 2 and day == 29:
return "St. Tib's Day, YOLD " + (year + 1166)
day_of_year = today.timetuple().tm_yday - 1
if is_leap_year and day_of_year >= 60:
day_of_year -= 1 # Compensate for St. Tib's Day
season, dday = divmod(day_of_year, 73)
return "%s %d, YOLD %d" % (DISCORDIAN_SEASONS[season], dday + 1, year + 1166)
</lang>
Racket
<lang racket>#lang racket/base
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Derived from 'D' Implementation
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(require racket/date racket/match)
(define seasons '(Chaos Discord Confusion Bureaucracy |The Aftermath|)) (define weekday '(Sweetmorn Boomtime Pungenday Prickle-Prickle |Setting Orange|)) (define apostle '(Mungday Mojoday Syaday Zaraday Maladay)) (define holiday '(Chaoflux Discoflux Confuflux Bureflux Afflux))
(define (ymd->date y m d) (seconds->date (find-seconds 0 0 0 d m y))) (define (leap-year? y) (with-handlers ((exn? (λ (x) #f))) (= 29 (date-day (ymd->date y 2 29)))))
(define (discordian-date d)
(define leap? (leap-year? (date-year d)))
(define year-day (match* (leap? (date-year-day d))
[(#t (? (λ (D) (>= D 59)) d0)) d0]
[(_ d0) (add1 d0)]))
(define season-day (modulo year-day 73)) ; season day
(define (list-ref-season l)
(define season-index (quotient year-day 73))
(symbol->string (list-ref l season-index)))
(string-append
(match* (season-day leap? (date-month d) (date-day d))
[( _ #t 2 29) "St. Tib's Day,"]
[((app (match-lambda
(5 apostle) (50 holiday) (_ #f))
(and (not #f) special)) _ _ _)
(string-append (list-ref-season special) ",")]
[( _ _ _ _)
(define week-day-name (list-ref weekday (modulo (sub1 year-day) 5)))
(format "~a, day ~a of ~a" week-day-name season-day (list-ref-season seasons))])
" in the YOLD " (number->string (+ (date-year d) 1166))))
(displayln (discordian-date (current-date)))
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- passing these tests makes me consistent with D implementation
(module+ test
(require rackunit) (define discordian/ymd (compose discordian-date ymd->date)) (check-equal? (discordian/ymd 2010 7 22) "Pungenday, day 57 of Confusion in the YOLD 3176") (check-equal? (discordian/ymd 2012 2 28) "Prickle-Prickle, day 59 of Chaos in the YOLD 3178") (check-equal? (discordian/ymd 2012 2 29) "St. Tib's Day, in the YOLD 3178"); (check-equal? (discordian/ymd 2012 3 1) "Setting Orange, day 60 of Chaos in the YOLD 3178") (check-equal? (discordian/ymd 2010 1 5) "Mungday, in the YOLD 3176") (check-equal? (discordian/ymd 2011 5 3) "Discoflux, in the YOLD 3177"))
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~FIN</lang>
- Output:
Pungenday, day 47 of Confusion in the YOLD 3179
REXX
This REXX version allows the mm or dd to be one or two digits.
Also, the year can be two or four digits, or it may be omitted.
If the Gregorian date is omitted or specified as an asterisk (*), the current date is used. <lang rexx>/*REXX program converts a mm/dd/yyyy Gregorian date ───► a Discordian date. */
@day.1= 'Sweetness' /*define the 1st day─of─Discordian─week*/ @day.2= 'Boomtime' /* " " 2nd " " " " */ @day.3= 'Pungenday' /* " " 3rd " " " " */ @day.4= 'Prickle-Prickle' /* " " 4th " " " " */ @day.5= 'Setting Orange' /* " " 5th " " " " */
@seas.0= "St. Tib's day," /*define the leap─day of Discordian yr.*/ @seas.1= 'Chaos' /* " 1st season─of─Discordian─year.*/ @seas.2= 'Discord' /* " 2nd " " " " */ @seas.3= 'Confusion' /* " 3rd " " " " */ @seas.4= 'Bureaucracy' /* " 4th " " " " */ @seas.5= 'The Aftermath' /* " 5th " " " " */
parse arg gM '/' gD "/" gY . /*obtain the specified Gregorian date. */ if gM== | gM=='*' then parse value date('U') with gM '/' gD "/" gY .
gY=left( right( date(), 4), 4 - length(Gy) )gY /*adjust for two─digit year or none. */
/* [↓] day─of─year, leapyear adjust. */
doy=date('d', gY || right(gM, 2, 0)right(gD ,2, 0), "s") - (leapyear(gY) & gM>2)
dW=doy//5; if dW==0 then dW=5 /*compute the Discordian weekday. */ dS=(doy-1)%73+1 /* " " " season. */ dD=doy//73; if dD==0 then dD=73 /* " " " day─of─month. */ if leapyear(gY) & gM=2 & gD=29 then ds=0 /*is this St. Tib's day (leapday) ? */ if ds==0 then dD= /*adjust for the Discordian leap day. */
say space(@day.dW',' @seas.dS dD"," gY +1166) /*display Discordian date to terminal. */ exit /*stick a fork in it, we're all done. */ /*──────────────────────────────────────────────────────────────────────────────────────*/ leapyear: procedure; parse arg y /*obtain a four─digit Gregorian year. */
if y//4\==0 then return 0 /*Not ÷ by 4? Then not a leapyear. */
return y//100\==0 | y//400==0 /*apply the 100 and 400 year rules.*/</lang>
output when using the (various) following inputs of:
2/28/2012 2/29/2012 3/1/2012 7/22/2010 9/2/2012 12/31/2011 10/19/2015 12/31/2100
Prickle-Prickle, Chaos 59, 3178 Setting Orange, St. Tib's day, 3178 Setting Orange, Chaos 60, 3178 Pungenday, Confusion 57, 3176 Setting Orange, Bureaucracy 26, 3178 Setting Orange, The Aftermath 73, 3177 Boomtime, Bureaucracy 73, 3181 Setting Orange, The Aftermath 73, 3266
Ruby
<lang ruby>require 'date'
class DiscordianDate
SEASON_NAMES = ["Chaos","Discord","Confusion","Bureaucracy","The Aftermath"] DAY_NAMES = ["Sweetmorn","Boomtime","Pungenday","Prickle-Prickle","Setting Orange"] YEAR_OFFSET = 1166 DAYS_PER_SEASON = 73 DAYS_PER_WEEK = 5 ST_TIBS_DAY_OF_YEAR = 60
def initialize(year, month, day) gregorian_date = Date.new(year, month, day) @day_of_year = gregorian_date.yday
@st_tibs = false
if gregorian_date.leap?
if @day_of_year == ST_TIBS_DAY_OF_YEAR
@st_tibs = true
elsif @day_of_year > ST_TIBS_DAY_OF_YEAR
@day_of_year -= 1
end
end
@season, @day = (@day_of_year-1).divmod(DAYS_PER_SEASON) @day += 1 #← ↑ fixes of-by-one error (only visible at season changes) @year = gregorian_date.year + YEAR_OFFSET end attr_reader :year, :day
def season SEASON_NAMES[@season] end
def weekday
if @st_tibs
"St. Tib's Day"
else
DAY_NAMES[(@day_of_year - 1) % DAYS_PER_WEEK]
end
end
def to_s
%Q{#{@st_tibs ? "St. Tib's Day" : "%s, %s %d" % [weekday, season, day]}, #{year} YOLD}
end
end</lang>
Testing: <lang ruby>[[2012, 2, 28], [2012, 2, 29], [2012, 3, 1], [2011, 10, 5], [2015, 10, 19]].each do |date|
dd = DiscordianDate.new(*date)
puts "#{"%4d-%02d-%02d" % date} => #{dd}"
end</lang>
- Output:
2012-02-28 => Prickle-Prickle, Chaos 59, 3178 YOLD 2012-02-29 => St. Tib's Day, 3178 YOLD 2012-03-01 => Setting Orange, Chaos 60, 3178 YOLD 2011-10-05 => Pungenday, Bureaucracy 59, 3177 YOLD 2015-10-19 => Boomtime, Bureaucracy 73, 3181 YOLD
Scala
<lang scala>package rosetta
import java.util.GregorianCalendar import java.util.Calendar
object DDate extends App {
private val DISCORDIAN_SEASONS = Array("Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath")
// month from 1-12; day from 1-31
def ddate(year: Int, month: Int, day: Int): String = {
val date = new GregorianCalendar(year, month - 1, day)
val dyear = year + 1166
val isLeapYear = date.isLeapYear(year)
if (isLeapYear && month == 2 && day == 29) // 2 means February
"St. Tib's Day " + dyear + " YOLD"
else {
var dayOfYear = date.get(Calendar.DAY_OF_YEAR) - 1
if (isLeapYear && dayOfYear >= 60)
dayOfYear -= 1 // compensate for St. Tib's Day
val dday = dayOfYear % 73
val season = dayOfYear / 73
"%s %d, %d YOLD".format(DISCORDIAN_SEASONS(season), dday + 1, dyear)
}
}
if (args.length == 3)
println(ddate(args(2).toInt, args(1).toInt, args(0).toInt))
else if (args.length == 0) {
val today = Calendar.getInstance
println(ddate(today.get(Calendar.YEAR), today.get(Calendar.MONTH)+1, today.get(Calendar.DAY_OF_MONTH)))
} else
println("usage: DDate [day month year]")
}</lang> Test: <lang scala>scala rosetta.DDate 2010 7 22 Confusion 57, 3176 YOLD scala rosetta.DDate 28 2 2012 Chaos 59, 3178 YOLD scala rosetta.DDate 29 2 2012 St. Tib's Day 3178 YOLD scala rosetta.DDate 1 3 2012 Chaos 60, 3178 YOLD scala rosetta.DDate 19 10 2015 Bureaucracy 73, 3181 YOLD </lang>
Seed7
<lang seed7>$ include "seed7_05.s7i";
include "time.s7i";
const array string: seasons is [0] ("Chaos", "Discord", "Confusion", "Bureaucracy", "The Aftermath"); const array string: weekday is [0] ("Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle", "Setting Orange"); const array string: apostle is [0] ("Mungday", "Mojoday", "Syaday", "Zaraday", "Maladay"); const array string: holiday is [0] ("Chaoflux", "Discoflux", "Confuflux", "Bureflux", "Afflux");
const func string: discordianDate (in time: date) is func
result
var string: discordianDate is "";
local
var integer: dyear is 0;
var integer: doy is 0;
var integer: dsday is 0;
begin
dyear := date.year + 1166;
if isLeapYear(date.year) and date.month = 2 and date.day = 29 then
discordianDate := "St. Tib's Day, in the YOLD " <& dyear;
else
doy := dayOfYear(date);
if isLeapYear(date.year) and doy >= 60 then
decr(doy);
end if;
dsday := doy rem 73; # season day
if dsday = 5 then
discordianDate := apostle[doy div 73] <& ", in the YOLD " <& dyear;
elsif dsday = 50 then
discordianDate := holiday[doy div 73] <& ", in the YOLD " <& dyear;
else
discordianDate := weekday[pred(doy) rem 5] <&
", day " <& dsday <&
" of " <& seasons[doy div 73] <&
" in the YOLD " <& dyear;
end if;
end if;
end func;
const proc: main is func
local
var time: today is time.value;
begin
today := time(NOW);
writeln(strDate(today) <& " as Discordian date: " <& discordianDate(today));
if discordianDate(date(2010, 7, 22)) = "Pungenday, day 57 of Confusion in the YOLD 3176" and
discordianDate(date(2012, 2, 28)) = "Prickle-Prickle, day 59 of Chaos in the YOLD 3178" and
discordianDate(date(2012, 2, 29)) = "St. Tib's Day, in the YOLD 3178" and
discordianDate(date(2012, 3, 1)) = "Setting Orange, day 60 of Chaos in the YOLD 3178" and
discordianDate(date(2010, 1, 5)) = "Mungday, in the YOLD 3176" and
discordianDate(date(2011, 5, 3)) = "Discoflux, in the YOLD 3177" then
writeln("Discordian date computation works.");
end if;
end func;</lang>
- Output:
2013-05-12 as Discordian date: Boomtime, day 59 of Discord in the YOLD 3179 Discordian date computation works.
Sidef
<lang ruby>require('Time::Piece');
var seasons = %w(Chaos Discord Confusion Bureaucracy The\ Aftermath); var week_days = %w(Sweetmorn Boomtime Pungenday Prickle-Prickle Setting\ Orange);
func ordinal (n) {
"#{n}" + (n % 100 ~~ [11,12,13] ? 'th'
: [n % 10])
}
func ddate(ymd) {
var d = %s'Time::Piece'.strptime(ymd, '%Y-%m-%d');
var yold = "in the YOLD #{d.year + 1166}";
var day_of_year0 = d.day_of_year;
if (d.is_leap_year) {
return "St. Tib's Day, #{yold}" if ([d.mon, d.mday] == [2, 29]);
day_of_year0-- if (day_of_year0 >= 60); # Compensate for St. Tib's Day
}
var weekday = week_days[day_of_year0 % week_days.len]; var season = seasons[day_of_year0 / 73]; var season_day = ordinal(day_of_year0 % 73 + 1);
return "#{weekday}, the #{season_day} day of #{season} #{yold}";
}
%w(2010-07-22 2012-02-28 2012-02-29 2012-03-01).each { |ymd|
say "#{ymd} is #{ddate(ymd)}"
}</lang>
- Output:
2010-07-22 is Pungenday, the 57th day of Confusion in the YOLD 3176 2012-02-28 is Prickle-Prickle, the 59th day of Chaos in the YOLD 3178 2012-02-29 is St. Tib's Day, in the YOLD 3178 2012-03-01 is Setting Orange, the 60th day of Chaos in the YOLD 3178
Tcl
<lang tcl>package require Tcl 8.5 proc disdate {year month day} {
# Get the day of the year set now [clock scan [format %02d-%02d-%04d $day $month $year] -format %d-%m-%Y] scan [clock format $now -format %j] %d doy
# Handle leap years
if {!($year%4) && (($year%100) || !($year%400))} {
if {$doy == 60} { return "St. Tib's Day, [expr {$year + 1166}] YOLD" } elseif {$doy > 60} { incr doy -1 }
}
# Main conversion to discordian format now that special cases are handled
incr doy -1; # Allow div/mod to work right
set season [lindex {Chaos Discord Confusion Bureaucracy {The Aftermath}} \
[expr {$doy / 73}]]
set dos [expr {$doy % 73 + 1}]
incr year 1166
return "$season $dos, $year YOLD"
}</lang> Demonstrating: <lang tcl>puts [disdate 2010 7 22]; # Today puts [disdate 2012 2 28] puts [disdate 2012 2 29] puts [disdate 2012 3 1]</lang>
- Output:
Confusion 57, 3176 YOLD Chaos 59, 3178 YOLD St. Tib's Day, 3178 YOLD Chaos 60, 3178 YOLD
zkl
<lang zkl>fcn discordianDate(y,m,d){
var [const]
seasons=T("Chaos","Discord","Confusion","Bureaucracy","The Aftermath"),
weekday=T("Sweetmorn","Boomtime","Pungenday","Prickle-Prickle","Setting Orange"),
apostle=T("Mungday","Mojoday","Syaday","Zaraday","Maladay"),
holiday=T("Chaoflux","Discoflux","Confuflux","Bureflux","Afflux"];
dYear,isLeapYear := y + 1166, Time.Date.isLeapYear(y);
if(isLeapYear and m==2 and d==29)
return("St. Tib's Day, in the YOLD " + dYear);
doy:=Time.Date.nthDayInYear(y,m,d); if(isLeapYear and doy>=60) doy-=1; dsDay:=(if(doy%73==0) 73 else doy%73); // Season day. if(dsDay==5) return(String(apostle[doy/73],", in the YOLD ",dYear)); if(dsDay==50) return(String(holiday[doy/73],", in the YOLD ",dYear)); dSeas:=seasons[(if(doy%73==0) doy-1 else doy)/73]; dWday:=weekday[(doy - 1)%5]; "%s, day %s of %s in the YOLD %s".fmt(dWday,dsDay,dSeas,dYear);
}</lang> <lang zkl>foreach y,m,d in (T(T(2010,7,22), T(2012,2,28), T(2012,2,29), T(2012,3,1), T(2010,1, 5), T(2011,5, 3))){
"%d-%02d-%02d is -->%s".fmt(y,m,d,discordianDate(y,m,d)).println();
}</lang>
- Output:
2010-07-22 is -->Pungenday, day 57 of Confusion in the YOLD 3176 2012-02-28 is -->Prickle-Prickle, day 59 of Chaos in the YOLD 3178 2012-02-29 is -->St. Tib's Day, in the YOLD 3178 2012-03-01 is -->Setting Orange, day 60 of Chaos in the YOLD 3178 2010-01-05 is -->Mungday, in the YOLD 3176 2011-05-03 is -->Discoflux, in the YOLD 3177
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