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Learn how seasons are defined and when they start and end in different regions and hemispheres. Find out the dates of equinoxes and solstices, and how they affect the length of days and nights.
Feb 11, 2022 · Seasons are periods of the year with distinct weather conditions and day lengths. Earth's four seasons are spring, summer, autumn (fall) and winter.
The Seasons Calculator shows the times and dates of Vernal (Spring) & Autumnal (Fall) equinoxes and Summer and Winter solstices all over the world.
Jun 8, 2024 · autumn, season of the year between summer and winter during which temperatures gradually decrease. It is often called fall in the United States because leaves fall from the trees at that time.
- The Editors of Encyclopaedia Britannica
Mar 12, 2024 · Learn about the four seasons of the year and how they are influenced by Earth's tilted axis and orbit around the sun. Find out how seasons vary in different regions and hemispheres, and explore related terms and facts.
Autumn, also known as fall in North American English, is one of the four temperate seasons on Earth. Outside the tropics, autumn marks the transition from summer to winter, in September (Northern Hemisphere) or March (Southern Hemisphere).
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Why is autumn called Fall?
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When does fall start?
On the shortest day of the year, the winter solstice, the day-to-day difference reaches zero.
