[autumnal equinox] just the facts, ma’am

# 2006 20th 18:26 21st 12:26 23rd 04:03 22nd 00:22
# 2007 21st 00:07 21st 18:06 23rd 09:51 22nd 06:08
# ver = spring, autumnus = autumn
# first point of Aries and first point of Libra
# cause of the seasons is that the rotation axis of the Earth is not perpendicular but makes an angle of about 23.44°,
# actual equinox is a single moment in time
# 94 days from the June solstice to the September equinox, but only 89 days from the December solstice to the March equinox
# fall about six hours later every year
# on the equinox day, the Sun rises in the morning, for every place on Earth except at the poles, exactly in the east and sets exactly in the west in the evening
# The calculation of Easter in the Christian church (first Sunday after the first full moon on or after the March equinox), uses its own definition for the equinox — it always falls on 21 March. The earliest Easter date is therefore 22 March.
# The March equinox marks the first day of the Iranian Norouz and the Bahá'í calendars
# the spring equinox marks the Wiccan Sabbat of Ostara
# in Japan, Vernal Equinox Day Shunbun no hi is an official national holiday
# In many Arab countries, Mother's Day is celebrated on the March equinox.
# The September equinox was "New Year's Day" in the French Republican Calendar, from 1793 to 1805
# UK harvest festival is the Sunday of the full moon closest to the September equinox.
# for nox, the plural is noctes. Although this form is retained in English in the genitive: equinoctial — it is not commonly used for the plural, which is equinoxes, rather than equinoctes.
one effect is their temporary disruptive effect on communications satellites, when the broad radiation spectrum overloads the Earth station's reception circuits with noise
# folk tales from Europe claim that, only on the March equinox, one can balance an egg on its point.
# groundhog day is connected with the spring equinox.
-Wikipedia