JULIAN CALENDAR

[Ju.lian calendar] n [L julianus, fr. Gaius Julius Caesar] (ca. 1771): a calendar introduced in Rome in 46 b.c. establishing the 12-month year of 365 days with each fourth year having 366 days and the months each having 31 or 30 days except for February which has 28 or in leap years 29 days--compare gregorian calendar