Question

What event marks the beginning of the Gregorian calendar?

Answer 1

Answer:

The Roman calendar (on which the Gregorian calendar was based) was synchronized with a celestial event: the lunar cycle. Originally, each Roman month began on the first day of the new moon. However, it was timed according to the full moon, which fell on the ides

Answer 2

Explanation:

In 1582, when Pope Gregory XIII introduced his Gregorian calendar, Europe adhered to the Julian calendar, first implemented by Julius Caesar in 46 B.C. Since the Roman emperor's system miscalculated the length of the solar year by 11 minutes, the calendar had since fallen out of sync with the seasons.