Why does autumn start on September 23 this year?

This year, the best of seasons will begin tomorrow, September 23. But why ?

Believing that the new seasons start on the 21st of the month is a received idea. Indeed, this year, autumn will start well on September 23rd. You’d like to know why ?

Fall 2022 will start on September 23

If the best of seasons, that of mushrooms, orange leaves, pumpkin soup and Halloween begins this year on September 23, there is a relatively simple explanation.

What’s not to like about these colors? Credit : Valiphotos

The Earth revolves around the Sun in 365 days, 5 hours and 46 minutes, and every four years the date of February 29 is added to readjust the bazaar. And since the Earth does not revolve around the Sun in 365 precise days, the day of the change of season varies, depending on the year. As a result, the date of the equinox, the moment when the Sun crosses the plane of our terrestrial equator and which announces the change of season, is scheduled for September 23 for the year 2022.

For fans of the season, don’t worry, it will still last 89 days in total, like all other years, until the winter solstice, which will be December 22, at 03:27 and 19 seconds, from after calculations by the Institute of Celestial Mechanics and Ephemeris Calculation (IMCCE), which is located within the Paris Observatory.

From tomorrow, we will lose 4 minutes of sun per day, and a few degrees of temperature. The good news is that it all brings us even closer to Christmas!

Read also :

10 reasons to rejoice at the return of autumn

Photo credit image of one: Valiphotos

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