Leviticus 23:24-44
Speak to the children of Israel, saying, In the seventh month, in the first day of the month, shall you have a sabbath, a memorial of blowing of trumpets, an holy convocation.
Nave's Topical Index—AKJV

Numbers 29:1
And in the seventh month, on the first day of the month, you shall have an holy convocation; you shall do no servile work: it is a day of blowing the trumpets to you.
Nave's Topical Index—AKJV

Ezekiel 45:25
In the seventh month, in the fifteenth day of the month, shall he do the like in the feast of the seven days, according to the sin offering, according to the burnt offering, and according to the meat offering, and according to the oil.
Nave's Topical Index—AKJV