ט״ו בניסן ג׳שמ״ב 15th 𝑜𝑓 Nisan, AM 3342 named in the Passover Papyrus as start of חג המצות ḤAG HAʾMAẒOT (Festival of Matzoh).

ט״ו בניסן ג׳שמ״ב15th of Nisan, AM 3342

Elephantine · Egypt

https://thisjewish.day/article/3342-01-15-elephantine-passover-papyrus