Changes to the Calendar

Changes to the Calendar

The Julian calendar was named after Julius Caesar and in 1582 the calendar was adjusted to the current Gregorian calendar honouring the Roman Catholic Pope. This was done because the Julian calendar had drifted too far from the equinox and for the calculation of Easter Sunday to occur after the 21st March. It is important to note that the continuity of the weekly cycle was not interrupted with this change. Another adjustment was made in 1752 when the British Empire also adopted the Gregorian calendar and again the continuity of the weekly cycle was not interrupted.

"The Ancient Math That Sets the Date of Easter and Passover" - The Atlantic

The people of Israel however, continued to use the Hebrew calendar (which originated from the Babylonian calendar). Notice the Babylonian confusion in determining the dates for festivals for the Jews and Christians.