Exodus 40:2, 17-18

“On the first day of the first month, set up the Holy Tent, which is the Meeting Tent.

So the Holy Tent was set up on the first day of the first month during the second year after they left Egypt. When Moses set up the Holy Tent, he put the bases in place, and he put the frames on the bases. Next he put the crossbars through the rings of the frames and set up the posts.