Exodus 12:31
29 It happened at midnight—the Lord attacked all the firstborn in the land of Egypt, from the firstborn of Pharaoh who sat on his throne to the firstborn of the captive who was in the prison, and all the firstborn of the cattle. 30 Pharaoh got up in the night, along with all his servants and all Egypt, and there was a great cry in Egypt, for there was no house in which there was not someone dead. 31 Pharaoh summoned Moses and Aaron in the night and said, “Get up, get out from among my people, both you and the Israelites! Go, serve the Lord as you have requested! 32 Also, take your flocks and your herds, just as you have requested, and leave. But bless me also.” 33 The Egyptians were urging the people on, in order to send them out of the land quickly, for they were saying, “We are all dead!”
Deuteronomy 16:6
4 There must not be a scrap of yeast within your land for seven days, nor can any of the meat you sacrifice on the evening of the first day remain until the next morning. 5 You may not sacrifice the Passover in just any of your villages that the Lord your God is giving you, 6 but 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. 7 You must boil13 and eat it in the place the Lord your God chooses; you may return the next morning to your tents. 8 You 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.
Notes and References
"... When Jubilees, a book much concerned with chronology and calendrical precision, did not have to improve upon its sources regarding the date of Passover (as it did in the case of the Festival of Weeks). Several scriptural passages define 1/14 as the date of Passover (e.g., Exodus 12:6; Leviticus 23:5; Numbers 9:3, 5; 28:16), and Jubilees simply repeats it (49:1, 10). If the date was not in question, the specific times for sacrificing and eating the Passover lamb were less clear. Exodus 12 says about these issues: “You shall keep it [the lamb] until the fourteenth day of this month; then the whole assembled congregation of Israel shall slaughter it at twilight ... They shall eat the lamb that same night ...” (12:6, 8). Exodus 12:29 names midnight as the time when the Lord struck the firstborn (as the Israelites were feasting), and Deuteronomy 16:6 adds that the Passover sacrifice is to occur “in the evening at sunset, the time of day when you departed from Egypt.” Exodus 12:10 stipulates that nothing is to remain until the morning; if it does it is to be burned. The Book of Jubilees elaborates on these givens, in particular on the sense of “twilight” (literally: between the evenings) ..."
VanderKam, James C. "Exegesis of Pentateuchal Legislation in Jubilees and Related Texts Found at Qumran" in Moriya, Akio, and Gōhei Hata (eds.) Pentateuchal Traditions in the Late Second Temple Period: Proceedings of the International Workshop in Tokyo, August 28-31, 2007 (pp. 177-200) Brill, 2012