https://www.almanac.com/content/first-day-seasons

More specifically, the start of each season is marked by either a solstice (for winter and summer) or an equinox (for spring and autumn). A solstice is when the  ...

https://www.almanac.com/content/first-day-fall-autumnal-equinox

Why does this happen? It depends where you live. On the equinox, the center of the Sun is above the horizon for 12 hours. However, “sunrises” is said to begin ...

https://www.timeanddate.com/calendar/aboutseasons.html

When do spring, summer, fall, and winter start and end? It depends ... However, the dates when the seasons begin and end vary depending on whom you ask.

https://www.timeanddate.com/calendar/autumnal-equinox.html

The fall (autumnal) equinox in the Northern Hemisphere is in September, while in ... The equinoxes start spring and fall, while solstices start astronomical summer and winter. ... When do seasons begin and end in the two hemispheres? more.

https://en.wikipedia.org/wiki/Autumn

Autumn, also known as fall in American English and sometimes in Canadian English, is one of ... In North America, autumn traditionally starts on September 21 and ends on December 21. It is considered to start with the September equinox (21 ...

https://www.surfertoday.com/environment/when-do-the-seasons-start-and-end

Did you know that seasons are not the same for everyone? ... Yes, the dates of when spring, summer, fall/autumn, and winter begin and end depend on anyone's ...

http://www.calendarpedia.com/when-is/fall.html

The two most commonly used ones are based on the astronomical calendar and the meteorological calendar. Astronomical and meteorological fall start and end ...

https://www.newsweek.com/when-does-fall-start-autumn-equinox-season-beginning-1126605

Sep 18, 2018 ... The autumn equinox is one of only two days a year with nearly equal sunlight and darkness.

http://www.calendarpedia.com/when-is/autumn.html

The two most commonly used ones are based on the astronomical calendar and the meteorological calendar. Astronomical and meteorological autumn start and ...

https://www.thesun.co.uk/news/4144147/autumn-begin-summer-end-autumnal-equinox/

Oct 16, 2018 ... Autumn officially starts in September and this year the autumnal equinox happened on September 23.