Day and night get equal billing as fall equinox arrives. Here are 3 things to know
Summary
On Monday, the autumnal equinox marks the start of fall in the Northern Hemisphere and spring in the Southern Hemisphere. During an equinox, day and night are nearly the same length because the Earth's axis aligns so that both hemispheres receive equal sunlight. This event has cultural significance around the world and coincides with some celebrations and natural phenomena.Key Facts
- The autumnal equinox occurs when day and night are nearly equal in length worldwide.
- It signals the start of fall in the Northern Hemisphere and spring in the Southern Hemisphere.
- The sun is directly overhead at the equator at noon during the equinox.
- Equinoxes occur twice a year, around late March and late September.
- The equinox is linked to various cultural and historical celebrations, such as harvest festivals.
- During the equinox, both the North and South Poles receive sunlight at the same time.
- Places like Antarctica, New Zealand, and parts of Australia may see a partial lunar eclipse during this equinox.
- Equinoxes differ from solstices, which occur during the most extreme tilts of the Earth’s axis towards or away from the sun.
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