Important, this returns the date of Pascha ONLY on the [[Old Calendar]]. To get the Gregorian date, add 13 days.
----==External Links==* Source: Hieromonk Cassian, ''A Scientific Examination of the Orthodox Church Calendar'', ISBN 0911165312. Available from [http://users.sisqtel.net/sgpm/ctos/oldcal/SEO.html The Center for Traditionalist Orthodox Studies]
* Programs using these formulae: [http://www.duke.edu/~aa63/menologion.html ''Menologion'']