# Autumnal Equinox: Fall Begins Sept 22

> Sept 22 marks fall's official start with shorter days and cooler weather.
- Title: Autumnal Equinox: Fall Begins Sept 22 · ABC7 Los Angeles
- Summary: Sept 22 marks fall's official start with shorter days and cooler weather. The autumnal equinox occurs on Sept 22 at 8:05 p.m. EDT, signaling the start of…
- Keywords: autumnal equinox, september, fall, weather, equinox, days, cooler weather, news, local, Autumnal, Begins, Sept
- Source: ABC7 Los Angeles — https://abc7.com/post/when-is-autumnal-equinox-what-know-days-get-shorter-weather-becomes-cooler/19857520
- Published: 2026-09-22T11:55:00+00:00
- Read time: 1 min
- Topics: autumnal equinox, september, fall, weather, equinox, days, cooler weather, news, local
## What is autumnal equinox?
The autumnal equinox marks equal day and night lengths globally.

> the term equinox derives from latin words for equal and night
## When does it happen?
Sept 22 at 8:05 p.m. eastern time this year.

> the autumnal equinox falls on sept twenty-two at about eight oh five p.m. edt
## What changes occur?
Shorter days and cooler weather begin after this date.

> chillier weather shorter days hot mugs of apple cider and halloween decorations aren't the only signs the seasons are changing
## Why does it matter?
Northern hemisphere gets shorter days while southern hemisphere gets spring.

> in the northern hemisphere the equinox symbolizes the onset of shorter days with longer cooler nights
## What comes next?
Winter solstice arrives on december twenty-first.

> the winter solstice this year is expected on monday december twenty-first
## Key takeaway

The autumnal equinox occurs on Sept 22 at 8:05 p.m. EDT, signaling the start of fall with shorter days and cooler weather.