Deuteronomy 16:6-8

6but you must sacrifice it in the evening in the place where he chooses to locate his name, at sunset, the time of day you came out of Egypt.

7You must cook and eat it in the place the Lord your God chooses; you may return the next morning to your tents.

8You must eat bread made without yeast for six days. The seventh day you are to hold an assembly for the Lord your God; you must not do any work on that day.