Targum Pseudo-Jonathan on Exodus 12:41 continues the chronological reconstruction begun the verse before. Thirty years passed between the Covenant Between the Pieces and the birth of Isaac. From Isaac's birth to the Exodus, four hundred years ran their course. Add them together and you arrive at the 430 years the Torah records.
The Aramaic is emphatic that the Exodus occurred "on the selfsame day" — the exact calendar date on which the counting began. The covenant with Abraham was sealed on the fifteenth of Nisan (Genesis 15). Isaac was born on that same date thirty years later. Israel walked out of Egypt on that same date four centuries after Isaac's birth. The Targum wants us to see the calendar ticking in divine precision.
The rabbis treated this as one of the strongest arguments for a providentially ordered history. Events do not drift randomly across the centuries. They land on matching dates. The brit with Abraham, the birth of Isaac, the Exodus from Mizraim — all three pinned to the fifteenth of Nisan. Every seder night sits exactly on that anniversary.
The Targum also names the sequence as the birth of a free people. The hosts of the Lord "went forth made free from the land of Mizraim." The word free carries weight in the Aramaic. This is not a temporary release or a permit for a three-day festival. This is legal, covenantal emancipation, stamped with a date that had been anticipated for four hundred and thirty years.
Takeaway: The Exodus happened on schedule. God had been counting down from Abraham's covenant and delivered on the exact date.