Discordian date
You are encouraged to solve this task according to the task description, using any language you may know.
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
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 F#>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 let season, dday = Math.DivRem(dayOfYear, 73) sprintf "%s %i, %i YOLD" seasons.[season] dday dyear</lang>
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.List import Data.Time import Data.Time.Calendar.MonthDay
seasons = words "Chaos Discord Confusion Bureaucracy The_Aftermath"
discordianDate (y,m,d) = do
let doy = monthAndDayToDayOfYear (isLeapYear y) m d (season, dday) = divMod doy 73 dos = dday - fromEnum (isLeapYear y && m >2) dDate
| isLeapYear y && m==2 && d==29 = "St. Tib's Day, " ++ show (y+1166) ++ " YOLD" | otherwise = seasons!!season ++ " " ++ show dos ++ ", " ++ show (y+1166) ++ " YOLD"
putStrLn dDate</lang>
Examples:
*Main> mapM_ discordianDate [(2012,2,28),(2012,2,29),(2012,3,1),(2010,9,2),(2010,12,6)] Chaos 59, 3178 YOLD St. Tib's Day, 3178 YOLD Chaos 60, 3178 YOLD Bureaucracy 26, 3176 YOLD The_Aftermath 48, 3176 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. * author: jklu, lang: 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;
};
function discordianDate(date) {
var y = date.getFullYear(); var yold = y + 1166; var dayOfYear = date.getDOY();
if (date.isLeapYear()) { if (dayOfYear == 60) return "St. Tib's Day, in the YOLD " + yold; else if (dayOfYear > 60) dayOfYear--; } dayOfYear--; var divDay= Math.floor(dayOfYear/73);
var seasonDay = (dayOfYear % 73) + 1; if (seasonDay == 5) return apostle[divDay] + ", in the YOLD " + yold; if (seasonDay == 50) return holiday[divDay] + ", in the YOLD " + yold;
var season = seasons[divDay]; var dayOfWeek = weekday[dayOfYear % 5];
return dayOfWeek + ", day " + seasonDay + " of " + season + " in the YOLD " + yold;
}
function test(y, m, d, result) {
console.assert((discordianDate(new Date(y, m, d)) == result), result);
}
console.log(discordianDate(new Date(Date.now())));
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>
Example use:
<lang javascript> console.log(discordianDate(new Date(Date.now()))); "Prickle-Prickle, day 47 of The Aftermath in the YOLD 3181" </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>
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
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 ───► 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 . /*get 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 2─digit year or none.*/
/* [↓] day─of─year, leapyear adj.*/
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 /*compute Discordian day─of─month.*/ dD=dD',' /*append a comma to Discordian day*/ if leapyear(gY) & gM=2 & gD=29 then ds=0 /*is this St. Tib's day (leapday)?*/ if ds==0 then dD= /*adjust for Discordian leap day. */
say space(@day.dW',' @seas.dS dD gY+1166) /*display the Discordian date. */ exit /*stick a fork in it, we're done.*/ /*────────────────────────────────────────────────────────────────────────────*/ leapyear: procedure; parse arg y /*obtain four-digit Gregorian year*/
if y//4\==0 then return 0 /*Not ÷ by 4? Not a leapyear.*/ return y//100\==0 | y//400==0 /*apply the 100 and 400 year rule.*/</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> 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) 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, dyear) } }</lang>
Test: <lang scala>ddate(2010, 7, 22) // Confusion 57, 3176 YOLD ddate(2012, 2, 28) // Chaos 59, 3178 YOLD ddate(2012, 2, 29) // St. Tib's Day 3178 YOLD ddate(2012, 3, 1) // Chaos 60, 3178 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
- Programming Tasks
- Date and time
- Ada
- AWK
- BASIC
- BBC BASIC
- Befunge
- C
- C++
- Clojure
- D
- Euphoria
- F Sharp
- F Sharp examples needing attention
- Examples needing attention
- Go
- Haskell
- Haskell examples needing attention
- Icon
- Unicon
- J
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