The Persian months

Al-Masudi mentions that all the months of the Persians have thirty days, and that after the months there are five days called al-nisiyya (the extra days). ²

The first is Farvardin, whose first day is Nawruz, and it lies one hundred and seventy-four days from Mihragan. Then Ardibihsht, Khurdad, Tir, Mardad, Shahrivar, and Mihr, whose sixteenth day is Mihragan. Then Aban, in which is Aban Ruz, and at its end the five days of the Frawardijan. Then Adhar, whose first day is the day the kawsaj comes out riding his mules in Iraq and the land of Persia. Then Dey, Bahman, and Isfandarmadh. ^{2 3}