Easter table dating table
There are three possible Easter dates depending upon the year and your cultural and religious persuasion. astronomers approximated astronomical full moon dates for the Christian church, calling them Ecclesiastical Full Moon (EFM) dates. This is obvious with the application of plain commonsense.
Devised predominantly by Lilius and Clavius, they were introduced in October 1582 by Pope Gregory XIII.
One bizarre encyclopaedia definition gets it so wrong that it concludes that Easter Sunday can never fall on March 22! From 1583, Astronomical and Paschal full moon dates never differ by more than 3 dates, even taking into account the 2-date AFMs (see above). March 20 is the critical date for determining all Easters, and March 20 was the equinox date in 325 AD when the definition of Easter date was agreed. Usually you will be able to find an email address (or an editor if it's a publication). the PFM date has always been the EFM date after March 20 (which was the equinox date in 325 A. Alternatively, you can refer them to this webpage, or to the most authoritative article on Easter dating I have seen at the Astronomical Society of SA for a complete explanation.
For example, an April 11 Easter Sunday could result from: For most Easter Sundays, the nearest astronomical full moon date can be anything from 10 days earlier (over a week before) to 2 days later (on the Tuesday after Easter). In our current Gregorian calendar, the March Equinox is one of 5 dates from March 18 to 22. Please write, and ask them to correct their definition to: This is right! astronomers approximated astronomical full moon dates for the Christian church, calling them Ecclesiastical Full Moon (EFM) dates. This definition is correct, and can be easily proved by checking historic Christian definitions and Easter Sunday dates.
You can also get a printable easter date worksheet for kids to work out the date of easter in any year at all.
Please note that the Easter dates given here are for the Gregorian calendar, which was introduced in 1582.