The Equinox - Spring (Vernal) and Autumn (Fall)

2023 dates and times in the Northern and Southern Hemispheres

The equinox and solstice dates below are for the Northern Hemisphere, in the Southern Hemisphere the dates are reversed (Winter Solstice on 21 June, Summer Solstice on 22 December). Times are in GMT/UTC.

Date & Time of Solstices & Equinoxes in 2023 (GMT)
Sun Time

In the yearly cycle, the next important date after the equinox is the solstice. There are two equinoxes and two solstices each year.

Check the dates for the 2021-2030 decade and the preceding ones, 2010-2020, 2000-2009, and 1992-1999.

Our ancient ancestors observed that the height of the noon sun varies throughout the year of 365 days. By measuring shadow length at noon each day, accurate reckoning of the progress of the year could be determined and the first calendars were made.

How did early astrologers determine the vernal equinox? They may have looked out for the moon riding into the constellation of Libra. This would mean that the Sun had entered Aries. However due to the of the earth's axis over centuries, today's observers must look for the moon's appearance in the constellation of Virgo. Tropical astrology however continues to use the original zodiac, discounting precessional effect.

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Solstice and Equinox Dates 2021-2030
British Summer Time
British Summer Time Dates