Exodus 19:1
On the third new moon after the people of Israel had gone out of the land of Egypt, on that day they came into the wilderness of Sinai.
Exodus 12:6
and you shall keep it until the fourteenth day of this month, when the whole assembly of the congregation of Israel shall kill their lambs at twilight.
Exodus 16:1
They set out from Elim, and all the congregation of the people of Israel came to the wilderness of Sin, which is between Elim and Sinai, on the fifteenth day of the second month after they had departed from the land of Egypt.
Numbers 33:15
And they set out from Rephidim and camped in the wilderness of Sinai.
Exodus 12:2
"This month shall be for you the beginning of months. It shall be the first month of the year for you.
Leviticus 23:16-18
You shall count fifty days to the day after the seventh Sabbath. Then you shall present a grain offering of new grain to the LORD.