High School Math

MISSION STATEMENT: To encourage and promote a greater use of the internet and computer technology in the math classroom. For educators, students, parents and homeschoolers.

Friday, January 28, 2005

Julian Calendar


In the year 46 BC, Julius Caesar reformed the Roman calendar to a more manageable form. At this time, Julius changed the number of days in the months to achieve a 365 day year. In order to catch up with the seasons, Julius Caesar also added 90 days to the year 46 BC between November and February.

The Julian calendar consisted of cycles of three 365-day years followed by a 366-day leap year. Around 9 BC, it was found that the priests in charge of computing the calendar had been adding leap years every three years instead of the four decreed by Caesar. As a result of this error, no more leap years were added until 8 AD.

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