Archive · 22 Sep 2025
Autumn Equinox 2025: Start of Fall and Cultural Significance
The autumnal equinox on September 22, 2025, marks the start of fall.
This is when the sun appears to cross the celestial equator, meaning day and night are nearly equal.
It also signifies a change in the seasons, as the days get shorter.
The event is celebrated across cultures with harvest festivals and traditions.
People often use this time to reflect, express gratitude, and set intentions, and welcome the upcoming transition of the season.
As the Earth moves, the nights will get longer.
The autumnal equinox begins on September 22, 2025, marking the start of fall.
The equinox occurs when the sun crosses the celestial equator.
Day and night are nearly equal on this day.
The equinox is the start of astronomical autumn.
Many cultures celebrate the equinox with festivals and traditions.
- Who
- The Sun and Earth
- What
- Autumnal Equinox
- When
- September 22, 2025
- Where
- Globally
- Why
- Due to the Earth's tilt and the sun's position
- Event
- Autumnal Equinox
- Date
- Monday, September 22, 2025
- Time
- 2:19 p.m. EDT
- Definition
- Sun crossing the celestial equator
- Key Feature
- Equal daylight and darkness
- Season Start
- Astronomical autumn
- Also Known As
- Autumn
