Hebrew / Jewish Calendar

Hebrew / Jewish Months

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No Hebrew name Length in days Babylonian name Notes
1 Nissan 30 Nisanu Aviv (spring) in the Tanakh
also spelled Nisan
called Abib before the Babylonian captivity
2 Iyar 29 Ayaru Ziv in the Tanakh
also spelled Iyyar
3 Sivan 30 Simanu also spelled Siwan
4 Tamuz 29 Du’uzu also spelled Tammuz / Thammuz
5 Av 30 Abu also spelled Ab
6 Elul 29 Ululu
7 Tishrei 30 Tashritu Eitanim or Ethanim in the Tanakh
also spelled Tishri or Tisri
8 Marcheshvan 29 or 30 Arakhsamna Bul in the Tanakh
often shortened to Cheshvan / Heshvan / Hesvan
9 Kislev 30 or 29 Kislimu also spelled Kislew / Chislev / Chisleu
10 Tevet 29 Tebetu also spelled Tebeth / Tebet
11 Shevat 30 Shabatu also spelled Shvat / Shebat / Sebat
12 Adar I 30 Adaru called Adar Aleph in leap years
12/13 Adar / Adar II 29 Adaru Adar Bet, also called Adar Sheni or Veadar
An extra month of the Hebrew year, having 29 days, added in leap years after the regular month of Adar.

Month Holidays/Notable days
Nissan Passover
Iyar Pesach Sheni / Lag B’Omer
Sivan Shavuot
Tamuz Seventeenth of Tammuz
Av Tisha B’Av / Tu B’Av / Tishah B’Av / Tisha Be’Av/ Tisha Baav / Tisha Bov / Tishah b’Ab / Tisha be’Ab
Ninth of Av
Observed as a fast-day to commemorate the destruction of the first and second temples in Jerusalem:
Tishrei Rosh Hashanah / Yom Kippur / Sukkot / Shmini Atzeret / Simchat Torah
Kislev Hanukkah / Chanukah / Chanukkah
The festival of lights commemorating the re-dedication of the temple in 165BC
Tevet Tenth of Tevet
Shevat Tu B’Shevat
Adar / Adar II Purim