Discordian calendar

TheDiscordianorErisian calendaris an alternativecalendarused by some adherents ofDiscordianism. It is specified on page 00034 of thePrincipia Discordia.
The Discordian year 1 YOLD is 1166 BC. (Elsewhere in thePrincipia Discordia, it is mentioned that theCurse of Greyfaceoccurred in 1166 BC.As a reference, AD 2025 is 3191 YOLD, Year of Our Lady of Discord.) The abbreviation "YOLD" is not used in thePrincipia, though the phrase "Year of Our Lady of Discord" is mentioned once.
As described in thePrincipia Discordia, the Discordian calendar has five 73-day seasons:Chaos,Discord,Confusion,Bureaucracy, andThe Aftermath. The Discordian year is aligned with the Gregorian calendar and begins on January 1, thus Chaos 1, 3191 YOLD is January 1,2025Gregorian.
The Erisian week consists of five days: Sweetmorn, Boomtime, Pungenday, Prickle-Prickle, and Setting Orange. The days of the week are named after the five basic Discordian elements: Sweet, Boom, Pungent, Prickle, and Orange. There are 73 of these weeks per year and every year begins with Sweetmorn.
Every fourth year in the Discordian calendar, starting in 2 YOLD, an extra day is inserted between Chaos 59 and Chaos 60 calledSt. Tib's Day. This is because 4 years + 1 day = 5, a holy number, but the Discordianleap yearalso coincides with the Gregorian one. The result of this is that any given day of the year in the Discordian calendar may be taken to correspond to the same day of the year in theGregorian calendar, and vice versa, although some users of the calendar believe that it is tied to theJulian calendarand so will diverge from the Gregorian in 3266 YOLD (AD 2100). St. Tib's Day is considered outside the Discordian week.
There are Apostle Holydays on the 5th day of each season, named after the 5 Discordian apostles: Mungday, forHung Mung; Mojoday, for Dr. Van Van Mojo; Syaday, for Sri Syadasti; Zaraday, for Zarathud; and Maladay, for Malaclypse the Elder. There are also Season Holydays on the 50th of each season: Chaoflux, Discoflux, Confuflux, Bureflux, and Afflux.
Only these eleven dates are named in thePrincipia Discordia; however, Discordians have felt free to invent other holidays which have become popular to varying degrees. Some of these include Discordians for Jesus/Love Your Neighbor Day (March 25/Discord 11); Jake Day (April 6/Discord 23 or occasionally May 23/Discord 70), a day to send tongue-in-cheek letters, emails or faxes to an official or bureaucracy; SaintCamping's Day (May 21/Discord 68), a day to make End of Days predictions and share them in social media; Eris Day (May 23/Discord 70), a day to gather and celebrate Goddess;Towel Day(May 25/Discord 72); Mid Year's Day (July 2/Confusion 37);X-Day(July 5/Confusion 40); andMultiversal Underwear Day(August 10/Bureaucracy 3).
ddateis a program that prints the current date in the Discordian calendar.  It was a part of theutil-linuxpackage containing basic system utilities.As such, it had been included at least since 1994 in nearly allLinux distributions.  In August 2011 however, one of the maintainers of util-linux made ddate optional, and by default omitted.In October 2012, ddate was completely removed from util-linux.The ddate program now has an upstream source.There was some controversy,but in the end, anyone wishing to reintroduce ddate to a distribution will have to create a separate package based on the new upstream. This has been done forDebian,FreeBSD,Fedora Linux,andGentoo Linuxfor example.
There are many other programs with similar functionality, such as Hodge Podge,anAndroidwidget. Discordian-calendar is an implementation using Java 8's date and time classes.