Posted in Science!, tagged #365Ways, #365Ways2024, astronomy, autumn, equinox, fall, fall equinox, seasons, Thoughts on September 22, 2024|
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Yesterday, we headed out into one of the many beautiful trail systems dotted around Ottawa. The day was bright and the paths were carpeted in a lovely array of gold, orange and red leaves. It felt like a perfect way to usher in fall, but it turns out we were a day early.
Today, however, we can celebrate the Autumn Equinox, when night and day are (more or less) equal, and the sun shines directly down streets set east to west, as they do in places like Chicago.
Autumnal equinox 2024 brings fall to the Northern Hemisphere today
When is the first day of fall in 2024?
A carefully worded answer is that on Sunday, Sept. 22, at 8:44 a.m. Eastern daylight time (5:44 a.m. Pacific daylight time) autumn begins astronomically in the Northern Hemisphere, and spring in the Southern. At that moment, the sun would be shining directly overhead as seen from a point in the equatorial Atlantic Ocean, 461 miles (743 km) south-southwest of Monrovia, Liberia.
10 Things About the September Equinox
Here are 10 facts about the first day of astronomical fall (autumn) in the Northern Hemisphere.
Welcome to fall!
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