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| Tishrei | |
|---|---|
The holiest day of the Jewish calendar, Yom Kippur, the Day of Atonement, takes place on the 10th of Tishrei. | |
| Native name | תִּשְׁרֵי (Hebrew) |
| Calendar | Hebrew calendar |
| Month number | 7 |
| Number of days | 30 |
| Season | Autumn (Northern Hemisphere) |
| Gregorian equivalent | September–October |
| Significant days | |
Tishrei (/ˈtɪʃreɪ/; Hebrew: תִּשְׁרֵי [tiʃˈʁej] ⓘ) or Tishri (/ˈtɪʃriː/; תִּשְׁרִי [tiʃˈɾi]; from Akkadian tašrītu 'beginning')[citation needed] is the first month of the civil year (which starts on 1 Tishrei) and the seventh month of the ecclesiastical year (which starts on 1 Nisan) in the Hebrew calendar. It is a month of 30 days. Tishrei usually occurs in September–October on the Gregorian calendar.
In the Hebrew Bible the month is called Ethanim (Hebrew: אֵתָנִים – 1 Kings 8:2), or simply the seventh month. In the Babylonian calendar the month is known as Araḫ Tišritum, "Month of Beginning" (of the second half-year).
Edwin R. Thiele has concluded, in The Mysterious Numbers of the Hebrew Kings, that the ancient Kingdom of Judah counted years using the civil year starting in Tishrei, while the Kingdom of Israel counted years using the ecclesiastical new year starting in Nisan. Tishrei is the month used for the counting of the epoch year – i.e., the count of the year is incremented on 1 Tishrei.[citation needed] Rabbinical scholar Allan M. Langer suggested that the shift away from an agricultural economy to a more mercantile one in post-Biblical times led to Tishrei being favored as the first month of the year over Nisan.

Langer, Allan M. (2012). ""The history of the Tishrei conundrum"". The Jewish Bible Quarterly. 40 (2): 131–134.