On the evening of the fourteenth day of the month, while the Israelites were camped at Gilgal on the plains of Jericho, they kept the Passover.
Jewish Publication Society of America Version (JPS1917) - Joshua 5:10 >And the children of Israel encamped in Gilgal; and they kept the passover on the fourteenth day of the month at even in the plains of Jericho.