September 23, 2010 Autumnal Equinox
September 23, 2010 6:46 am Enrichment, From the Teacher, ScienceToday marks this year’s Autumnal Equinox and is the first day of Autumn in the northern hemisphere.
What is Autumnal Equinox? Autumnal Equinox in the northern hemisphere is the day when night and day almost have the same length. The Sun crosses the celestial equator moving southward.
In the Southern hemisphere, the Autumnal Equinox corresponds to the center of the Sun crossing the equator moving northward. This occurs on the date of the northern vernal equinox.
Nosebleed? I am too.
Read more here: The September Equinox Explained
Here is a photo of our “Autumn Tree” that sheds leaves in sync with the Autumn season in the northern hemisphere.