Números 33:3

3 The Israelites set out from Rameses on the fifteenth day of the first month, the day after the Passover. They marched out defiantly in full view of all the Egyptians,

3 And they journeyed from Rameses in the first month, on the fifteenth day of the first month; on the morrow after the passover the children of Israel went out with a high hand in the sight of all the Egyptians,