The first month of the Jewish civil year, and the seventh of the ecclesiastical; called, in 1 Kings 8:2, Ethanim, which see; and answering nearly to our October. On the first day of Tishri the feast of Trumpets occurred; on the tenth, the great day of Expiation; and on the fifteenth, the feast of Tabernacles commenced.

Appendix v. Rabbinic Theology and Literature
... 3. On the 22nd we returned to kill the apostates. VII. Tisri. 1. ON the 3rd Tishri
the mention of the Divine Name was removed from public deeds. VIII. ...
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Tishri

Tishri or Tisri