Copts, 11 September , New Year, the beginning of school year and March 1
Copts celebrate the New Year on September 11, when the Sun enters the constellation of Virgo (and not the zodiac sign. The Sun is at 18 Virgo that day).
This is the time the school year starts traditionally. So September = NEW YEAR = NEW SCHOOL YEAR.
But this was aligned once with MARCH 1, which was the old New Year, when the Spring Equinox happened. Now it is 20-21 March. Off by about 20/21 degrees in the zodiac, too...due to precession ( it is perfectly normal, do not try to change this. This is how we calculate precession).
12,800 years ago or os, the New Year was on March 1, the Age of Virgo (so VIrgo was on the spring equinox point. Now it is Pisces). And that was when school started.
Fun fact - you can see the old calendar and the old astrology at Gobekli Tepe and all the rest of Anatolian sites. It is the same astrology in use now. It is the same astrology we found in caves all over Europe and dated to c. 40,000 years ago. A lot of those symbols are modern constellations, along with names preserved since then.
Copts also dub this day as ''Thout 1'', meaning Ati 1, meaning when Ati/Spica was conjunct VIrgo 18 (where the Sun is on 11 September).