Alternate Calendars :: Jewish
The Jewish calendar is based on both the solar and lunar cycles. The lunar year, averaging 354 days, is adjusted to the solar year by periodic leap years, occurring approximately once every three years. Leap years contain an intercalary month and ensure that the major religious holidays fall in the proper season. The Jewish calendar is used for religious purposes by Jews all over the world, and it is the official calendar of Israel.
| Tishrei | (Sep– Oct) 30 days |
| Chesvan | (Oct– Nov) 29 or 30 days |
| Kislev | (Nov– Dec) 29 days or 30 days |
| Tevet | (Dec – Jan) 29 days |
| Shevat | (Jan – Dec) 30 days |
| Adar | (Feb– Mar) 29 or 30 days |
| Adar II | (intercalary leap year month) |
| Nisan | (Mar– Apr) 30 days |
| Iyar | (Apr– May) 29 days |
| Sivan | (May – June) 30 days |
| Tammuz | (June – July) 20 days |
| Av | (July – Aug) 30 days |
| Elul | (Aug– Sep) 29 days |