According to Exodus 40, when was the Tabernacle erected?

According to Exodus 40, the Tabernacle was erected on the first day of the first month.

Exodus dates the erection to the first day of the first month in the second year after the Israelites left Egypt. Moses set up the sanctuary, placed its furnishings, and anointed the structure and its equipment. The timing marks the completion of the construction instructions that began earlier in the book.

The date is significant because it begins a new year in the wilderness chronology. The Israelites had left Egypt during the first month of their first year, so the Tabernacle was completed nearly a year later. Exodus then describes a cloud covering the tent and the divine glory filling it.

This date is separate from the fourteenth day of the first month, when Passover was observed. Confusing those dates can produce an answer that belongs to the festival rather than to the sanctuary's completion.