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It's not, it's called the Gregorian Calender. Julius Caesar reformed and improved the old Roman calender in the first century B.C. and thus it was called the Julian Calender. His reform was very good but it did not allow for the fact that a year is actually 365.25 days long. It had the year being exactly 365 days. Thus by the Middle Ages the calendar was off by eleven days. Pope Gregory the Great revised it by just cutting out eleven days one year, so the calender would "catch up" with the actual position of the sun and stars in the sky, and adding leap years so that it would not get out of alignment again. Thus we now have the Gregorian Calender.
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Who developed calendar?
The calendar we use today was made by the Romans under Julius Caesar, thus, it is called the Julian calendar.
Which is the modern calendar the Gregorian calendar or the Julian calendar?
the Gregorian calendar
Why was the Julian calendar most important in the Roman legacy?
Our calendar is the Gregorian Calendar. It is named after Pope Gregory XIII who took 11 minutes of the day of the Julian calendar and made some other minor modifications in 1582. This means that our calendar is a slightly modified version of the Julian Calendar.
What is the Julian Calendar and when was it first introduced?
The Julian Calendar was a calendar reform by Julius Caesar in Rome, introduced in 46 BC. The Julian Calendar divided the year into 365 days and 12 months, with a leap day every 4 years.
When did the Julian calendar take effect for the first time?
The Julian calendar took effect for the first time in 45 B.C.
