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Fall Officially Arrives with the Autumnal Equinox
The autumnal equinox marks nearly equal daylight and nighttime hours as the Earth’s 23.5-degree tilt causes the sun to cross the celestial equator, starting astronomical fall.
- The autumnal equinox officially arrived on Monday, September 22, 2025, marking the start of fall in the Northern Hemisphere.
- This event occurs because the Earth's 23.5-degree tilt and orbit align the sun’s rays directly on the equator, causing nearly equal day and night.
- The equinox ends summer, begins cooler, shorter days, and coincides with meteorological fall, which runs from September 1 to November 30.
- September features the year’s largest daily loss of daylight in the Northern Hemisphere, which will continue decreasing until the winter solstice on December 21.
- Communities are already embracing fall with festivals and apple picking, while daylight saving time adjustment in the U.S. is scheduled for November 2.
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Fall begins in East Tennessee: What to know
KNOXVILLE, Tenn. (WATE) — Fall officially begins at 2:19 p.m. EDT on September 22. Earth is tilted on an axis at 23.5°. This tilt results in Earth’s seasonal changes. During the fall and spring, Earth is neither tilted toward nor away from the Sun. During the summer, the Northern Hemisphere is tilted toward the Sun while the Southern Hemisphere is tilted away. During the winter, the Northern Hemisphere is tilted away from the Sun while the South…
·Nashville, United States
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On Monday (22 September) autumn starts astronomically – and weather models indicate an unusually mild, partly dry autumn 2025. A weather column by Dominik Jung.
Summer officially drew his reverence on Monday, and autumn settles slowly in the province.
·Montreal, Canada
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Coverage Details
Total News Sources22
Leaning Left4Leaning Right1Center4Last UpdatedBias Distribution45% Left, 44% Center
Bias Distribution
- 45% of the sources lean Left, 44% of the sources are Center
45% Left
L 45%
C 44%
11%
Factuality
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