The ancient Egyptian was observing the stars and learning from them and putting their time on their basis, so he divided the sky longitudinally into 36 divisions or decimal places, and each star group appears in the eastern horizon for a period of ten days, arranged in succession from right to left according to the direction of the rotation of the earth.
These stars appear in the eastern horizon of the sky just before sunrise, and they usually start with the emergence of the poetic star (Isis - Subdat), whose combustible appearance is the astrological sign of the Egyptian stellar year, which is also described as the poetic year in relation to the star of the poetry.
The ancient Egyptians knew the poetic year since the beginning of history and its duration is 365 and a quarter is the period between two successive phenomena of the burning appearance of the star of poetry.
Another civil calendar of 365 only was used in the official records of the state and it was the writers' habit in ancient Egypt that the sarcasm of the civil calendar and the complaint that its chapters overlapped
And it comes out of time. And upon the coronation of the kings of Egypt, they swore that they should not change this stellar calendar, and that they would not make any modification or change of it, and this calendar remained until Julius Caesar came to Egypt with the Julian result.
The star hour of one of the coffins dates back to the Middle Kingdom and we see in it the most important star groups that the ancient Egyptian cared about, so we see on the right side the “star is a Sahel” and represents Osir and next to him is the “Star Subbed” Isis and on the left side we see the largest bear group consisting of 7 stars in the form of the bull's thigh Next to it is a "bit" sign carried by a woman representing heaven
