Calendar Before The Julian Calendar

Calendar Before The Julian Calendar. Finally, in 46 bc, julius caesar initiated a thorough reform that resulted in the establishment of a new dating system, the julian calendar (q.v.). Over the centuries, the julian system of leap days — in which every fourth year got an extra day — threw the calendar off.

This calendar employed a cycle of three years of 365 days, followed by a year of. The julian calendar was a roman calendar developed at the request of julius caesar by the astronomer sosygenes and put into effect in 45 bce.