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The solar calendar introduced by Julius Caesar in Rome in 46 bc, having a year of 12 months and 365 days and a leap year of 366 days every fourth year. It was eventually replaced by the Gregorian calendar. See Table at calendar.
(Historical Terms) the calendar introduced by Julius Caesar in 46 bc, identical to the present calendar in all but two aspects: the beginning of the year was not fixed on Jan 1 and leap years occurred every fourth year and in every centenary year. Compare Gregorian calendar
the calendar established by Julius Caesar in 46 B.C., fixing the length of the year at 365 days and at 366 days every fourth year. There are 12 months of 30 or 31 days, except for February, which has 28 days with the exception of every fourth year, or leap year, when it has 29 days. Compare Gregorian calendar.
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|Noun||1.||Julian calendar - the solar calendar introduced in Rome in 46 b.c. by Julius Caesar and slightly modified by Augustus, establishing the 12-month year of 365 days with each 4th year having 366 days and the months having 31 or 30 days except for February|
solar calendar - a calendar based on solar cycles