Historical letters dating to 1700 add message
To convert the Julian date to the Gregorian date, it is necessary to add the number of days shown in Table F.
Step 4 must be ignored if the Easter Sunday date calculated after step 3 occurred when the Julian calendar was still in use.
Orthodox churches became fully autonomous in 1054 A.
D., and celebrate their Easter always on the basis of the Julian calendar and the "19 PFM dates" table.
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.
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.
For example, year 2285 gave us a PFM date of March 21, and step 2 gave us a total result of 6.
The present method describing the Easter Dating Procedure can be found in Christian Prayer Books.