This was their third passover: the first was in Egypt, Exo 12; the second at Mount Sinai, Num 9; the third here; for in their wilderness travels these and all other sacrifices were neglected, Amos 5:25.
Related Commentaries of Joshua 5:10
Joshua 5:10
10 And the children of Israel encamped in Gilgal, and kept the passover on the fourteenth day of the month at even in the plains of Jericho.