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In the northern hemisphere, the vernal equinox (March) conventionally marks the beginning of spring in most cultures and is considered the start of the New Year in the Assyrian calendar, Hindu, and the Persian or Iranian calendars, while the autumnal equinox (September) marks the beginning of autumn.
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Learn how Earth's tilt and orbit around the Sun create the equinoxes and solstices, the moments when day and night are equal or longest. Find out when they happen in 2024 and how they vary on different planets.
Learn how the tilt of Earth's axis affects the seasons and the Sun's path in the sky. Find out when and why solstices and equinoxes occur, and how they mark the start of each season in the Northern Hemisphere.
Jul 20, 1998 · Learn about equinox, the two moments in the year when the Sun is exactly above the Equator and day and night are of equal length. Find out when they occur, how they relate to the seasons, and what causes the precession of the equinoxes.
Oct 19, 2023 · Learn what an equinox is, how it affects Earth's seasons and daylight, and how it varies across the planet and in space. Explore the science, culture, and history of the equinoxes with photos and illustrations.
Sep 22, 2017 · Find out how they influence the seasons and hours of daylight on each planet. Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium ...
