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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 ...
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 ...
It is only after a complete Gregorian leap-year cycle of 400 years that the seasons commence at approximately the same time. In the 21st century the earliest March equinox will be 19 March 2096, while the latest was 21 March 2003. The earliest September equinox will be 21 September 2096 while the latest was 23 September 2003 (Universal Time).
The equinox arrives on Saturday, marking the start of the fall season for the Northern Hemisphere. Here's what to know about how we split up the year using the Earth's orbit. As the Earth travels ...
In the Northern Hemisphere after the autumnal equinox, the days begin to get shorter as the winter solstice gets closer. The seasons result from the Earth's tilt toward or away from the Sun.
Observers within 63°26' of the Equator can view twilight twice each day on every date between the month of the autumnal equinox and the month of vernal equinox between astronomical dawn, nautical dawn, or civil dawn, and sunrise as well as between sunset and civil dusk, nautical dusk, or astronomical dusk, i.e., from September 1 to March 31 of ...
September equinox: 180° 12h December solstice: 270° 18h The exact instants of equinoxes and solstices are the times when the apparent ecliptic longitude (including ...
In 2023, the vernal equinox falls on March 20, 2023, making the first full moon after that date April 6 and the following Sunday—April 9—Easter 2023. dtimiraos - Getty Images Easter Sunday ...