History Of Our Calendar | Calendars
http://www.webexhibits.org/calendars/year-history.html
If the year started on, for example, 1 March, two months later than our present year, when was the leap day inserted? When it comes to determining if a year is a leap year, since AD 8 the Julian calendar has always had 48 months between two leap days. So, in a country using a year starting on 1 March, 1439 would have been a leap year, because ...
DA: 71 PA: 25 MOZ Rank: 65