Converter

Both directions, on one page. Your browser does the arithmetic. Nothing is sent anywhere.

Gregorian to Discordian

Gregorian date

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Discordian to Gregorian

Season

Day of season

Year of Our Lady Discord

St. Tib's Day (leap years only)

The converter runs in your browser, so it needs JavaScript. The reference page gives the rules in full, and they are plain enough to apply by hand: the Discordian year is the Gregorian year plus 1166, and the five seasons of 73 days begin on January 1, March 15, May 27, August 8 and October 20.