Deuteronomy 16: No Passover in the Book of Judges

There's no record in the Deuteronomistic history of the Passover ever being celebrated, at least not until the reign of Josiah. No king, including David, is said to observe this right. What might explain this huge gap is that the Passover perhaps had in fact been celebrated, but only on the family level - Exodus 12 says it should be celebrated.