Dating coptic orthodox church
The Coptic calendar has 13 months, 12 of 30 days each and an intercalary month at the end of the year of 5 or 6 days depending whether the year is a leap year or not.
Harurre describes how he and his men suffered badly from the mountains that brand the skin with the intense heat.
However, in spite of the stories mentioned above, the subdivision of the year into three seasons based on the regular River Nile flood and agricultural activities namely, inundation of the river Nile "Acht", sowing "Bert" and harvesting "Shemmo", remained accurately observed along the millennia.
This subdivision possibly occurred during the Ramesside period of the 19th Dynasty.
had a great impact on the construction of the calendar.
Historically, ancient Egyptians initially used a civil calendar based on a solar year that consisted of 365 days only, without making any adjustment for the additional quarter of a day each year.