Why is Passover 8 days?

Answer 1

The Torah says that it should be seven days, and that is referring to in Israel. Because of the way the calendar was set up, the people in the diaspora didn't always know in time exactly when each month started, so they had to keep an extra day, and that stuck.

Answer 2

Well its 7 days in Israel but 8 days anywhere outside of Israel. God established the number eight as a very special number. Eight represents:

The day a Jewish male child is circumcised {Leviticus 14:10}

The second set of wrappings on the Tzitzis, a garment worn by males

The garments worn by the Kohen Gadol

The days of Pesach/Matzohs- Leviticus 23:4-8

The Torah's list of unclean swarming things - Leviticus 11:29

The number of times that the words Kee-Ah-Nee - Hashem- Eh Loh Hay Chehm, meaning "For I am Hashem your God." {Ex. 6:7, 16:12, Lev. 11:44, 20:7, 24:22, 25:17, 26:1, and Deut. 29:5}

During these eight days we are remembering the Jewish people's exodus from Egypt.

Answer 3

Passover is 7 days because GOD commanded Israel to have passover for 7 days.

Answer 4

Because the Torah commands it (Leviticus ch.23).