When Is The Equinox
Theres also another more common definition of when the seasons start namely meteorological definitions which are based on average temperatures rather that astronomical events. On March 20 2021 nature will once again bring us the vernal equinox the time of year that ushers in spring in the Northern Hemisphere. March Equinox In the Northern Hemisphere the Vernal Spring Equinox marks the first day of astronomical spring. When is the equinox . Then on September 22. So who decides that. This is the day when the. In the Southern Hemisphere its in March. The fall autumnal equinox in the Northern Hemisphere is in September. When Is Winter Solstice. This happens either on September 22 23 or 24 every year. See equinox and solstice dates for 2020plus learn the difference between an astronomical season and a meteorological season. In 2021 the spring equinox also known as the vernal equinox falls on Saturday 20 March technically occurring at 937am. Astronomy Seasons M