However, Leap Day is skipped in any year ending in "00" unless that year ... The new system, known as the Julian calendar, was in use for centuries before officials within the Catholic church ...

The Julian calendar was 0.0078 days (11 minutes and ... isn’t perfect or there would be no need for leap year. But it was a big improvement, reducing drift to mere seconds.

Leap Years come and go every four years without ... Pope Gregory XIII replaced the Julian calendar with the Gregorian calendar and introduced our current calendar system. He also simply eliminated ...

4 Leap years were introduced by the Roman emperor Julius Caesar, who created a new calendar to take the extra quarter-days into account. The Julian calendar took effect in 45 BC. 5 The maths ...