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 | This article needs additional citations for verification. (September 2021) |
| event | equinox | solstice | equinox | solstice | ||||
|---|---|---|---|---|---|---|---|---|
| month | March[3] | June[4] | September[5] | December[6] | ||||
| year | day | time | day | time | day | time | day | time |
| 2019 | 20 | 21:58 | 21 | 15:54 | 23 | 07:50 | 22 | 04:19 |
| 2020 | 20 | 03:50 | 20 | 21:43 | 22 | 13:31 | 21 | 10:03 |
| 2021 | 20 | 09:37 | 21 | 03:32 | 22 | 19:21 | 21 | 15:59 |
| 2022 | 20 | 15:33 | 21 | 09:14 | 23 | 01:04 | 21 | 21:48 |
| 2023 | 20 | 21:25 | 21 | 14:58 | 23 | 06:50 | 22 | 03:28 |
| 2024 | 20 | 03:07 | 20 | 20:51 | 22 | 12:44 | 21 | 09:20 |
| 2025 | 20 | 09:02 | 21 | 02:42 | 22 | 18:20 | 21 | 15:03 |
| 2026 | 20 | 14:46 | 21 | 08:25 | 23 | 00:06 | 21 | 20:50 |
| 2027 | 20 | 20:25 | 21 | 14:11 | 23 | 06:02 | 22 | 02:43 |
| 2028 | 20 | 02:17 | 20 | 20:02 | 22 | 11:45 | 21 | 08:20 |
| 2029 | 20 | 08:01 | 21 | 01:48 | 22 | 17:37 | 21 | 14:14 |
The September equinox (or southward equinox) is the moment when the Sun appears to cross the celestial equator, heading southward. Because of differences between the calendar year and the tropical year, the September equinox may occur from September 21 to 24.
At the equinox, the Sun as viewed from the equator rises due east and sets due west. Before the Southward equinox, the Sun rises and sets more northerly, and afterwards, it rises and sets more southerly.
The equinox may be taken to mark the end of astronomical summer and the beginning of astronomical autumn (autumnal equinox) in the Northern Hemisphere, while marking the end of astronomical winter and the start of astronomical spring (vernal equinox) in the Southern Hemisphere.[7]
- ^ Astronomical Applications Department of USNO. "Earth's Seasons - Equinoxes, Solstices, Perihelion, and Aphelion". Retrieved August 1, 2022.
- ^ "Solstices and Equinoxes: 2001 to 2100". AstroPixels.com. February 20, 2018. Retrieved December 21, 2018.
- ^ Équinoxe de printemps entre 1583 et 2999
- ^ Solstice d’été de 1583 à 2999
- ^ Équinoxe d’automne de 1583 à 2999
- ^ Solstice d’hiver
- ^ "Defining Seasons". Time and Date AS. Retrieved May 31, 2019.
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