Gregorian calendar
The Gregorian calendar has undergone many alterations over the years. Originally there were only 10 months.
1. March
2. April
3. May
4. June
These first four were named after various gods. The next six were were named for numbers from the roman counting system.
5. Quintilius (5th)
6. Sextilius (6th)
7. September
8. October
9. November
10. December
After various revisions, another two months were added at the beginning of the year: Januarius and Februarius. Also, Quintilius and Sextilius were renamed Julius (July) and Augustis (August) after the famous Roman leaders.
