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).
Why Do We Have Leap Year?Even though the standard calendar year is 365 days, the Earth actually takes 365 days 5 hours 48 minutes and 46 seconds to go completely around the sun. (This is called a solar year.) In order to keep the calendar cycle synchronized with the seasons, one extra day is (usually) added every four years as February 29th. The Julian calendar (established by Julius Caesar in …
Compare Gregorian calendar.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for julian calendar
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 yearCompare Gregorian calendar
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012