The Julian calendar was in use from the time Julius Caesar consolidated his power.
The Julian calendar over-estimated the number of leap years required. And, with minor changes to the number of days in each month, it remained the calendar of use until the reign of Pope Gregory XIII:
From the Wikipedia...
The Gregorian calendar is the calendar used in most of the world.[1] It was introduced in October 1582 by Pope Gregory XIII as a minor modification of the Julian calendar, reducing the average year from 365.25 days to 365.2425 days, and adjusting for the drift in the 'tropical' or 'solar' year that the inaccuracy had caused during the intervening centuries.
Ummm...maybe you might want to search that again?
The Julian calendar was in use from the time Julius Caesar consolidated his power.
The Julian calendar over-estimated the number of leap years required. And, with minor changes to the number of days in each month, it remained the calendar of use until the reign of Pope Gregory XIII:
From the Wikipedia...
Source: https://en.wikipedia.org/wiki/Gregorian_calendar
Well, Not exactly the point i was making but thanks for the History. Love it