21 and 25 dating
For example, year 1995 gave us a PFM date of April 5, and step 2 gave us a total result of 9.Looking at Table E, this 9 shows that this PFM date occurs on a Tuesday, so we need to add 5 days to find the next Sunday, which is April 10.
April 3 in 1922) is their Orthodox Easter Sunday date for that year.ENGLAND used the Julian calendar until 1752, so its Easter Sunday dates are obtained by using steps 1, 2 and 3 (but not 4) of the Orthodox Method stated here. From 1753 England adopted the (revised) PFM Gregorian dates Table A and subsequent tables used in the calculations above.For example, English Easter Sunday date for 1750 A. The Gregorian calendar omits certain February 29 dates to keep its dates aligned with the seasons and position of Earth in relation to the Sun.For example, this occurred in 1990 because the Western Easter Sunday date of (Gregorian calendar) April 15, 1990 is the same as the Orthodox Easter Sunday date of (Julian calendar) April 2, 1990.In most years, Orthodox Easter follows Western Easter by one or more weeks.The example for year 1995 gives the Julian Easter Sunday date of April 10, and Table F shows that we need to add 13 days to convert it to the Gregorian calendar date of April 23.
This date is the Gregorian calendar Orthodox Easter Sunday date for year 1995 A. Other examples: Year 1994: Step 1: PFM=A17, Step 2: 1 0 5 = 6, Step 3: A17 1=Julian April 18, 1994, Step 4: Julian A18 13 = Gregorian May 1, 1994 Year 2870: Step 1: PFM=M25, Step 2: 6 5 3 = 14, Step 3: M25 7=Julian April 1, 2870, Step 4: Julian A1 19 = Gregorian April 20, 2870 INDEX Here is an algorithm written in BASIC to calculate the Gregorian Easter Sunday date for years 1583 to 4099 (Western churches only).
This replacement did not occur until later in many countries e.g. See GM Arts Easter Date Calculations for more information.
Both of these methods existed continuously throughout this period. The Julian calendar was replaced by the Gregorian calendar in October 1582 to re-align March 20 (and therefore Easter) with the seasons by removing 10 dates October 5 to 14, 1582.
Easter Sunday date was based on the Julian calendar in use at that time.
Despite frequent references to March 21, this date has no special significance to any recent Easter dating methods.
The present method describing the Easter Dating Procedure can be found in Christian Prayer Books.