On the fifteenth day of the second month after they had left the land of Egypt, the whole congregation of Israel set out from Elim and came to the Desert of Sin, which is between Elim and Sinai.

Exodus 12:6
You must keep it until the fourteenth day of the month, when the whole assembly of the congregation of Israel will slaughter the animals at twilight.

Exodus 12:51
And on that very day the LORD brought the Israelites out of the land of Egypt by their divisions.

Exodus 17:1
Then the whole congregation of Israel left the Desert of Sin, moving from place to place as the LORD commanded. They camped at Rephidim, but there was no water for the people to drink.

Exodus 19:1
In the third month, on the same day of the month that the Israelites had left the land of Egypt, they came to the Wilderness of Sinai.

Numbers 33:10
They set out from Elim and camped by the Red Sea.

Numbers 33:11
They set out from the Red Sea and camped in the Desert of Sin.

Ezekiel 30:15
I will pour out My wrath on Pelusium, the stronghold of Egypt, and cut off the crowds of Thebes.

And they took their journey from Elim, and all the congregation of the children of Israel came to the wilderness of Sin, which is between Elim and Sinai, on the fifteenth day of the second month after their departing out of the land of Egypt.