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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] On the Gregorian calendar, the northward equinox can occur as early as 19 March or as late as 21 March at 0° longitude.
- Equinox - Wikipedia
In the Northern Hemisphere, the March equinox is called ...
- Equinox - Wikipedia
分點 （英語： equinox ，或稱 二分點 ）是想像中天球赤道在天球上的位置，是每年太陽穿過 天球赤道 和 黃道 在 天球 上交點的天文事件 [5] ，這造成地球上各地的白天和夜晚幾乎等長。 只有在分點的瞬間，地球上的 日夜分界線 （白天和夜晚分界之處）才會垂直於赤道。 其結果是地球的南北兩 半球 得到相同的照明。 換言之，分點是 日下點 正好落在赤道上的唯一時刻，意味著在赤道上會看見太陽位在 頭頂正上方 。 分點每年會出現兩次，大約分別在3月21日（ 春分 ）和9月23日（ 秋分 ）。 在春分，日下點由南向北通過赤道，而秋分則是日下點由北向南通過赤道。 分點和 至點 直接關係到 每年的季節 。
The March equinox – aka the vernal equinox – marks the sun’s crossing above Earth’s equator, moving from south to north. Earth’s tilt on its axis is what causes this northward shift of the sun’s...
The March equinox is the moment the Sun crosses the celestial equator —an imaginary line in the sky above Earth’s equator— from south to north. This happens on March 19, 20, or 21 every year. 10 facts about the March equinox. Equinox Local Time & Date. In Roanoke Rapids, North Carolina, USA: Tuesday, March 19, 2024 at 11:06 pm EDT (Change location)
2017年3月15日 · The vernal equinox takes place in March each year and signals the start of spring in the Northern Hemisphere. During the vernal or spring equinox, the amount of daylight and darkness is...
2023年10月19日 · The March equinox is the vernal equinox in the Northern Hemisphere, and the autumnal equinox in the Southern. The September equinox is the autumnal equinox in the Northern Hemisphere and the vernal in the Southern. The Science of the Equinoxes. During the equinoxes, solar declination is 0°.
