Reference

The 12 Months of the Year

12
Months, January through December

The full list of month names and their standard three-letter abbreviations, in calendar order.

All Month Names

1JanuaryJan
2FebruaryFeb
3MarchMar
4AprilApr
5MayMay
6JuneJun
7JulyJul
8AugustAug
9SeptemberSep
10OctoberOct
11NovemberNov
12DecemberDec

Where Month Names Come From

Most month names trace back to Latin — several honor Roman gods (January for Janus, March for Mars) while others are simply numbered based on the old Roman calendar, which is why September through December literally mean "seventh" through "tenth," despite now being the 9th through 12th months.