Discordian date: Difference between revisions
m (→{{header|BASIC}}: corrected the error + added output) |
(→{{header|Ada}}: Marked as incorrect.) |
||
| Line 4: | Line 4: | ||
=={{header|Ada}}== |
=={{header|Ada}}== |
||
{{incorrect|Ada|It reports December 31, 2100 as THE_AFTERMATH 72, when it should be THE_AFTERMATH 73.}} |
|||
discordian.adb: |
discordian.adb: |
||
Revision as of 20:46, 6 October 2015
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; procedure Discordian is
use Ada.Calendar; subtype Year_Number is Integer range 3067 .. 3565; type Seasons is (Chaos, Discord, Confusion, Bureaucracy, The_Aftermath); subtype Day_Number is Integer range 1 .. 73;
type Discordian_Date is record
Year : Year_Number;
Season : Seasons;
Day : Day_Number;
Is_Tibs_Day : Boolean := False;
end record;
procedure Convert (From : Time; To : out Discordian_Date) is
use Ada.Calendar.Arithmetic;
First_Day : Time;
Number_Days : Day_Count;
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;
if (To.Year - 2) mod 4 = 0 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;
end Convert;
procedure Put (Item : Discordian_Date) is
begin
Ada.Text_IO.Put ("YOLD" & Integer'Image (Item.Year));
if Item.Is_Tibs_Day then
Ada.Text_IO.Put (", St. Tib's Day");
else
Ada.Text_IO.Put (", " & Seasons'Image (Item.Season));
Ada.Text_IO.Put (" " & Integer'Image (Item.Day));
end if;
Ada.Text_IO.New_Line;
end Put;
Test_Day : Time; Test_DDay : Discordian_Date;
begin
Test_Day := Clock; Convert (From => Test_Day, To => Test_DDay); Put (Test_DDay); Test_Day := Time_Of (Year => 2012, Month => 2, Day => 28); Convert (From => Test_Day, To => Test_DDay); Put (Test_DDay); Test_Day := Time_Of (Year => 2012, Month => 2, Day => 29); Convert (From => Test_Day, To => Test_DDay); Put (Test_DDay); Test_Day := Time_Of (Year => 2012, Month => 3, Day => 1); Convert (From => Test_Day, To => Test_DDay); Put (Test_DDay); Test_Day := Time_Of (Year => 2010, Month => 7, Day => 22); Convert (From => Test_Day, To => Test_DDay); Put (Test_DDay); Test_Day := Time_Of (Year => 2012, Month => 9, Day => 2); Convert (From => Test_Day, To => Test_DDay); Put (Test_DDay); Test_Day := Time_Of (Year => 2012, Month => 12, Day => 31); Convert (From => Test_Day, To => Test_DDay); Put (Test_DDay);
end Discordian;</lang>
- Output:
YOLD 3177, CHAOS 21 YOLD 3178, CHAOS 59 YOLD 3178, St. Tib's Day YOLD 3178, CHAOS 60 YOLD 3176, CONFUSION 56 YOLD 3178, BUREAUCRACY 25 YOLD 3178, THE_AFTERMATH 73
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( cmd,x) { # under Microsoft Windows XP
cmd = "DATE <NUL"
cmd | getline x # The current date is: MM/DD/YYYY
close(cmd) # close pipe
return sprintf("%04d%02d%02d",substr(x,28,4),substr(x,22,2),substr(x,25,2))
} 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
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 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 %d, YOLD %d", season( 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 #today is Jan 7th, 2011 Chaos 7, YOLD 3177 $ ./ddate 2011 1 7 Chaos 7, YOLD 3177 $ ./ddate 2012 2 28 Chaos 59, YOLD 3178 $ ./ddate 2012 2 29 St. Tib's Day, YOLD 3178 $ ./ddate 2012 3 1 Chaos 60, YOLD 3178 $ ./ddate 2010 7 22 Confusion 57, YOLD 3176
C++
<lang cpp>
- include <iostream>
- include <algorithm>
- include <vector>
- include <sstream>
//-------------------------------------------------------------------------------------------------- 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; } pair <int, int> p; p.first = d, p.second = m; vector<myTuple>::iterator f; f = find( holyday.begin(), holyday.end(), p ); int dd = 0, day, wday, mon, yr = y + 1166; if( d == 29 && m == 2 && isLeap( y ) ) { cout << ( *f ).second() << ", Year of Our Lady of Discord " << yr; return; } for( int x = 1; x < m; x++ ) dd += getMaxDay( x, 1 ); dd += d; day = dd % 73; wday = dd % 5; mon = dd / 73; cout << wdays[wday] << ", " << seasons[mon] << " " << day << ", 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: 22 07 2010 Pungenday, Confusion 57, Year of Our Lady of Discord 3176
Enter a date (dd mm yyyy) or 0 to quit: 07 01 2011 Boomtime, Chaos 7, Year of Our Lady of Discord 3177
Enter a date (dd mm yyyy) or 0 to quit: 29 02 2012 St. Tib's Day, Year of Our Lady of Discord 3178
Enter a date (dd mm yyyy) or 0 to quit: 04 06 2013 Setting Orange, Confusion 9, Year of Our Lady of Discord 3179
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; // 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]; 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() {
(cast(Date)Clock.currTime).discordianDate.writeln;
}</lang>
- Output:
Setting Orange, day 42 of Discord in the YOLD 3178
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</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) + 1166;
int m = date.get(Calendar.MONTH);
int d = date.get(Calendar.DATE);
if (date.isLeapYear(y) && m == 2 && d == 29)
return "St. Tib's Day, in the YOLD " + y;
int dayOfYear = date.get(Calendar.DAY_OF_YEAR);
if (date.isLeapYear(y) && dayOfYear >= 60)
dayOfYear--;
int seasonDay = dayOfYear % 73;
if (seasonDay == 5)
return apostle[dayOfYear / 73] + ", in the YOLD " + y;
if (seasonDay == 50)
return holiday[dayOfYear / 73] + ", in the YOLD " + y;
String season = seasons[dayOfYear / 73];
String dayOfWeek = weekday[(dayOfYear - 1) % 5];
return String.format("%s, day %s of %s in the YOLD %s",
dayOfWeek, seasonDay, season, y);
}
public static void main(String[] args) {
System.out.println(discordianDate(new GregorianCalendar()));
test(2010, 7, 22, "Pungenday, day 57 of Confusion in the YOLD 3176");
test(2012, 2, 28, "Prickle-Prickle, day 59 of Chaos in the YOLD 3178");
test(2012, 2, 29, "St. Tib's Day, in the YOLD 3178");
test(2012, 3, 1, "Setting Orange, day 60 of Chaos in the YOLD 3178");
test(2010, 1, 5, "Mungday, in the YOLD 3176");
test(2011, 5, 3, "Discoflux, in the YOLD 3177");
}
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: s1w_, lang: JavaScript */
function print_ddate(mod) {
var p;
switch(mod || 0) {// <--choose display pattern or pass option by parameter
default:
case 0:/* Sweetmorn, Day 57 of the Season of Confusion, Anno Mung 3177 */ p="{0}, [Day {1} of the Season of {2}], Anno Mung {3}"; break;
case 1:/* Sweetmorn, The 57th Day of Confusion, 3177 YOLD */ p="{0}, [The {1}th Day of {2}], {3} YOLD"; break;
case 2:/* Sweetmorn, the 57th day of Confusion, AM 3177 */ p="{0}, [the {1}th day of {2}], AM {3}"; break;
case 3:/* Sweetmorn / Confusion 57th / AM 3177 */ p="{0} / [{2} {1}th] / AM {3}"; break;
}
var ddateStr, curr, sum, extra, today, day, month, year, dSeason, dDay, season, ddate, dyear;
format = function(s, $1, $2, $3, $4) {
if ($2 != undefined) {
var postfix;
switch(parseInt($2.charAt($2.length-1))) {
case 1: postfix = '}st'; break;
case 2: postfix = '}nd'; break;
case 3: postfix = '}rd'; break;
default:postfix = '}th';
}
return p.replace(/\}th/, postfix).replace(/(\[|\])/g, ).format($1, $2, $3, $4);
}
else return p.replace(/\[.*?\]/,"{2}").format($1, $2, $3, $4);
}
String.prototype.format = function() {
var pattern = /\{\d+\}/g;
var args = arguments;
return this.replace(pattern, function(capture){ return args[capture.match(/\d+/)]; });
}
dDay = new Array("Sweetmorn", "Boomtime", "Pungenday", "Prickle-Prickle", "Setting Orange");
dSeason = new Array("Chaos", "Discord", "Confusion", "Bureaucracy", "Aftermath");
curr = new Date(); extra = new Array(0,3,0,3,2,3,2,3,3,2,3,2);
today = curr.getDate(); month = curr.getMonth(); year = curr.getFullYear();
sum = month * 28;
for(var i=0; i<=month; i++)
sum += extra[i];
sum += today;
day = (sum - 1) % 5; ddate = sum % 73;
season = (month==1)&&(today==29) ? "St. Tib\'s Day" : dSeason[Math.floor(sum/73)];
dyear = year+1166;
ddateStr = ""+dDay[day]+ddate+season+dyear;
document.write(ddateStr.replace(/(\D+)(?:(\d+)(?!St)|(?:\d+))(\D+)(\d+)/i, format));
}</lang>
Example use:
<lang javascript>print_ddate() "Sweetmorn, Day 57 of the Season of Confusion, Anno Mung 3177" print_ddate(1) "Sweetmorn, The 57th Day of Confusion, 3177 YOLD" print_ddate(2) "Sweetmorn, the 57th day of Confusion, AM 3177" print_ddate(3) "Sweetmorn / Confusion 57th / AM 3177" </lang>
look at calendar; lern about holydays
Mathematica
<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
Almost an exact copy of Euphoria, except for two minor changes ( and(or) parenthesis rqd and +=1900 not rqd ) <lang Phix>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>
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$(dyear)) & " YOLD"
END IF
? result
END FUNCTION</lang>
PureBasic
<lang PureBasic>Procedure.s Discordian_Date(Y, M, D)
Protected DoY=DayOfYear(Date(Y,M,D,0,0,0)), Yold$=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
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
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.divmod(DAYS_PER_SEASON) @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]].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
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.
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
- Ada examples needing attention
- Examples needing attention
- AWK
- BASIC
- BBC BASIC
- C
- C examples needing attention
- C++
- Clojure
- D
- Euphoria
- F Sharp
- Go
- Haskell
- Haskell examples needing attention
- Icon
- Unicon
- J
- Java
- JavaScript
- JavaScript examples needing attention
- Mathematica
- Perl
- Perl 6
- Phix
- PHP
- PicoLisp
- Pike
- PowerBASIC
- PureBasic
- Python
- Racket
- REXX
- Ruby
- Scala
- Seed7
- Tcl