When does autumn begin? The astronomical and calendar beginnings of autumn fall on different days!
The calendar seasons are always the same. The first day of spring falls on March 21, summer begins on June 22, autumn on September 23, and winter on December 22. Therefore , the calendar autumn in 2025 falls as usual on September 23 —a Tuesday.
When does autumn begin? The first day of autumn 2025—both calendar and astronomical.Compared to the calendar equinox, astronomical autumn begins with the autumnal equinox. This means that the sun passes through the point of Libra, the sun's rays fall perpendicularly on the equator while also being tangent to the surface at the poles. During the equinox, day and night are approximately the same length—12 hours each. This year, astronomical autumn will fall the day before the beginning of the calendar autumn, on Monday, September 22nd.
Meteorological autumn? We already have it!The matter is complicated because, in addition to calendar and astronomical seasons, there are also meteorological seasons . These were established for the needs of climatologists and meteorologists, so that they could always compare the same periods and create comparative models based on them. These seasons are different in the Earth's two hemispheres. For the Northern Hemisphere, meteorological autumn lasts from September 1st to November 30th.
Source: radiozet.pl/radiopogoda.pl
Read also:
Want more orchids? Instead of buying more flowers, try this trick.
This one simple window trick will save you a fortune on heating. Few people know about it!
A Natural Barrier Against Midges. Houseplants Are a Game Changer
This article was first published on Fakt on September 13, 2021.
fakt
