The date of the Fall (or Autumnal) Equinox varies from year to year. So, here’s a question:
When does summer end and fall officially start?
The answer is: it depends…
…on whether you use the astrological or the meteorological definition of seasons.
The astrological definition of fall is marked by the Autumnal Equinox (September 23, 2019) and lasts until the Winter Solstice (December 21, 2019).
The meteorological definition is based on the Gregorian calendar and temperature cycles and determines September 1 as the first day of fall.
Want to know more about Fall Equinox (like how day and night hours aren’t exactly equal)? Or what time the equinox will occur in your location?
Check out these sources:
Fall brings cooler days and nights, providing great conditions for lawns to store up nutrients and expand their root systems before winter dormancy. You can optimize this process with over seeding, aerating and fertilizing.