When is the first day of autumn?

The first day of autumn depends on which definition you use:

• September 22 or 23 (in the Northern Hemisphere) marks the autumn equinox, the beginning of astronomical autumn.
• September 1 marks the beginning of meteorological autumn, which ends on November 30.

Given that autumn starts in September for both definitions, this month is a good time to wish your family and friends a happy autumn.

Use Quillbot’s AI Image Generator to create unique autumn images you can use in your greetings.