Autumn 2027 countdown

There are 323 days left until autumn, which falls on Thursday, September 23, 2027 this year. That is 46 weeks and 1 day, or about 7,752 hours.

It begins at the astronomical instant of the equinox or solstice, calculated with Jean Meeus’ formulas; the exact time changes every year.

The exact moment is September 23, 2027 at 2:01 AM in New York and September 23, 2027 at 7:01 AM in London.

When is autumn in the coming years?

Countdown facts

• Last time was Wednesday, September 23, 2026, 42 days ago.
• 12% of the time between 2026 and 2027 has already passed.
• There are 27,907,200 seconds left.
• In 2027 it falls on Thursday; in 2028 it will fall on Friday.