Wikipedia
Paopi
Paopi ( Coptic: ), which is known as Babah in Arabic, is the second month of the Coptic calendar. It lasts between 11 October and 9 November of the Gregorian calendar, unless the previous Coptic year was a leap year. The month of Paopi is the second month of the Season of Akhet (Inundation) in Ancient Egypt, when the Nile floods inundated the land. (They have not done so since the construction of the High Dam at Aswan.)
Paopi means "that of Opet" for the month originally celebrated the "Beautiful feast of Opet". The Ancient Egyptians believed that during this month, the sun deity Amon-Ra travelled from Karnak to Luxor to celebrate the famous festival of Opet.