Once upon a time I wrote a function for remind(1) to compute the date of Pascha (Easter in the eastern churches), which uses different rules. It uses the Julian

Once upon a time I wrote a function for remind(1) to compute the date of Pascha (Easter in the eastern churches), which uses different rules. It uses the Julian calendar (mostly). Here it is on github: https://github.com/pjungwir/remind-pascha https://github.com/pjungwir/remind-pascha It lets you choose between 3 algorithms, one of which is Gauss's.