In fact, according to calculations made on the basis of the heliacal rising of the star Sirius (Sothis) and inscriptions found by archaeologists, this date must have been October 22.
Daɣ medanan ijjanen fal atkul n tatrit tan sirius (Sothis) d ikitban ijrawan kel farak win agna n tamuzduq n addinat, ašal wen addobat as eqqal ašal wan 22 n ayor wan eid el fitr.