2 occurrences across the corpus

Church Orders

Apostolic Constitutions, Book VIII 47:8

If any bishop, or presbyter, or deacon shall celebrate the holiday of the passover before the vernal equinox with the Jews, let him be deprived.

Sefer haYashar (Book of Jasher)

The Book of Jasher 44:47

And it was after this that the brook of Egypt was filled above all its sides, and all the inhabitants of Egypt went forth, and also the king and princes went forth with timbrels and dances, for it was a great rejoicing in Egypt, and a holiday at the time of the inundation of the sea Sihor, and they went there to rejoice all the day.