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The March equinox is known as the vernal equinox (spring equinox) in the Northern Hemisphere and as the autumnal equinox (autumn equinox or fall equinox) in the Southern Hemisphere. [ 8 ] [ 7 ] [ 10 ]
UT date and time of equinoxes and ... 2021 20: 09:37: 21: 03:32: 22: 19:21: ... This template shows the times and dates of equinoxes and solstices on Earth for up to ...
Astronomical almanacs define the solstices as the moments when the Sun passes through the solstitial colure, i.e. the times when the apparent geocentric celestial longitude of the Sun is equal to 90° (June solstice) or 270° (December solstice). [29] The dates of the solstice varies each year and may occur a day earlier or later depending on ...
9th: Daylight saving time begins. At 2 a.m. local time, clocks will "spring forward" one hour to mark the start of daylight saving time, which will continue until Nov. 2, 2025. While this biannual ...
On the date of the equinox, the center of the Sun spends a roughly equal amount of time above and below the horizon at every location on the Earth, so night and day [d] are about the same length. Sunrise and sunset can be defined in several ways, but a widespread definition is the time that the top limb of the Sun is level with the horizon. [28]
On the summer solstice, when the northern tilt is closest to the sun, we have the longest day, usually June 20 or 21. ... 2025. Then, spring will last until June 20, when the summer solstice ...
By the time we reach the summer solstice on June 20, 2025, it will be the longest day of the year. So even though Dec. 21 feels dark, it's actually the turning point toward brighter days ...
In addition to spring, ecological reckoning identifies an earlier separate prevernal (early or pre-spring) season between the hibernal (winter) and vernal (spring) seasons. This is a time when only the hardiest flowers like the crocus are in bloom, sometimes while there is still some snowcover on the ground.