Julian calendar

calendar introduced by Julius Caesar in 46 BCE

The Julian calendar was a reform of the Roman calendar which was introduced by Julius Caesar in 46 BC and came into force in 45 BC (709 ab urbe condita). It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed to approximate the tropical year, known at least since Hipparchus. It has a regular year of 365 days divided into 12 months, and a leap day is added to February every four years. Hence the Julian year is on average 365.25 days long.
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Noun
1. 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
(synonym) Old Style calendar
(hypernym) solar calendar

Eng: julian calendar
Urdu: جولینی تَقویم ۔ تَقویمِ قیصَری ۔ گریگورین کیلَنڈَر ۔