Exodus 40:17

{In} the first month of the second year, on [the] first of the month, the tabernacle was set up.

Numbers 7:1

On the day Moses finished setting up the tabernacle and appointed and consecrated it and all its vessels, and the altar and its vessels, and he appointed them and consecrated them,

Exodus 40:1-2

And Yahweh spoke to Moses, saying,

Numbers 9:1

Yahweh spoke to Moses in the desert of Sinai, in the second year after they came out from the land of Egypt, in the first month, saying,

Treasury of Scripture Knowledge

Summary

And it came to pass in the first month in the second year, on the first day of the month, that the tabernacle was reared up.

Bible References

The first month

Exodus 40:1
And Yahweh spoke to Moses, saying,
Numbers 7:1
On the day Moses finished setting up the tabernacle and appointed and consecrated it and all its vessels, and the altar and its vessels, and he appointed them and consecrated them,
Numbers 9:1
Yahweh spoke to Moses in the desert of Sinai, in the second year after they came out from the land of Egypt, in the first month, saying,