Today is the First Day of Autumn and the Fall Equinox. I'm not ready for the cold up here above the 42nd parallel. I love being able to walk out the door in shirt sleeves. But I do like the absence of flies and mosquitoes. What are your musings on the changing of the seasons?… pic.twitter.com/nSXItgIylp
— Jim Pacing His Cage 🕊 (@iamisgo11) September 22, 2025
Holy SMOKES, I am so ready to shuffle off this summer coil.
BLECH - HATESES it.
FIRST DAY OF FALL: The autumnal equinox is today at 1:19p CT… the moment when the sun crosses the equator, moving from the Northern Hemisphere into the Southern Hemisphere. Today day and night are nearly equal in length everywhere on Earth (the word equinox comes from Latin for… pic.twitter.com/se4vHWPYcc
— James Spann (@spann) September 22, 2025
...Today day and night are nearly equal in length everywhere on Earth (the word equinox comes from Latin for “equal night”). In the Northern Hemisphere, it marks the first day of fall, while in the Southern Hemisphere, it signals the start of spring.
Notice the terminator (the line that separates daylight from darkness) on the dusk disk satellite image this morning is running north and south from pole to pole. The terminator path varies by time of year due to Earth's orbital revolution around the Sun.
The plane of the terminator is nearly parallel to planes created by lines of longitude today, but its maximum angle is approximately 23.5° to the pole during the solstices.
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