YHWH struck the firstborn of Egypt הַלַּיְלָה בַּחֲצִי Exodus 12:29
Yahshua is not of the firstborn of Egypt. He is the covering for Israel.
By this time, the blood of the lamb was already on the doorposts of the sons of Israel.
(CLV) Ex 12:6
And it will become a charge of yours until the fourteenth day of this month. Then they will slay it, every assembly of the congregation of the sons of Israel, between the evening hours.
In other words, on the fourteenth day, during daylight hours.