Exodus 40:17

So on the first day of the first month in the second year the House was put up.

Numbers 7:1

And when Moses had put up the House completely, and had put oil on it and made it holy, with all the things in it, and had made the altar and all its vessels holy with oil;

Exodus 40:1-2

And the Lord said to Moses,

Numbers 9:1

And the Lord said to Moses, in the waste land of Sinai, in the first month of the second year after they had come out of the land of Egypt,

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 the Lord said to Moses,
Numbers 7:1
And when Moses had put up the House completely, and had put oil on it and made it holy, with all the things in it, and had made the altar and all its vessels holy with oil;
Numbers 9:1
And the Lord said to Moses, in the waste land of Sinai, in the first month of the second year after they had come out of the land of Egypt,

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain