Nehemiah 8:2 English Standard Version (ESV)

² So Ezra the priest brought the Law before the assembly, both men and women and all who could understand what they heard, on the first day of the seventh month.

Leviticus 23:24 English Standard Version (ESV)

²⁴ “Speak to the people of Israel, saying, In the seventh month, on the first day of the month, you shall observe a day of solemn rest, a memorial proclaimed with blast of trumpets, a holy convocation.

Numbers 29:1 English Standard Version (ESV)

Offerings for the Feast of Trumpets

29 “On the first day of the seventh month you shall have a holy convocation. You shall not do any ordinary work. It is a day for you to blow the trumpets,