8/24/2023 0 Comments Days between solstice and equinoxTake the example of mainland United States. It will happen again in 2101.ĭue to time zone differences, the equinox may occur a day earlier at locations that are behind UTC. The last time the March equinox was on March 21 (in UTC) was in 2007. The March equinox can happen on March 19, 20, or 21. In reality, however, it occurs at a specific moment in time and its date at any given location is determined by the exact instant when the Sun is overhead the equator.ġ0 facts about the March equinox Varying Equinox Dates Many people around the world celebrate the whole day, usually March 21, as the March equinox. In any given calendar year, this happens twice, first around March 20 ( March equinox) and then again around September 22 ( September equinox). In technical terms, this means that at the instant of the equinox, the Earth's celestial equator, which is the equator's imaginary projection into space, intersects with the center of the Sun. When is this year's March equinox? Sun Directly Above the EquatorĪn equinox is the exact instant when the Sun is directly overhead the equator and the Earth's rotational axis is tilted neither towards nor away from the Sun. Due to time zone differences, the equinox may occur a day later in locations ahead of UTC and a day earlier in locations behind UTC. Note: All dates and times in this article refer to the equinox in UTC time, unless otherwise stated. Spring or March equinox? The March equinox is the vernal (spring) equinox in the Northern Hemisphere, but the autumnal (fall) equinox in the Southern Hemisphere. Business Date to Date (exclude holidays).
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