When Is First Day of Fall 2027?
First Day of Fall 2027 falls on Thursday, September 23, 2027.
First Day of Fall 2027 falls on Thursday, September 23, 2027 — a Thursday. That is 335 days from today. The date is confirmed, so the only thing that moves is the countdown itself.
| Year | Date | Day of week |
|---|---|---|
| 2027 | Thu 23 Sep 2027 | Thursday |
| 2028 | Sat 23 Sep 2028 | Saturday |
| 2029 | Sun 23 Sep 2029 | Sunday |
| 2030 | Mon 23 Sep 2030 | Monday |
| 2031 | Tue 23 Sep 2031 | Tuesday |
| 2032 | Thu 23 Sep 2032 | Thursday |
Why the day of the week moves
A date advances by one weekday each year, because 365 days is 52 weeks plus one day. In a leap year it advances by two, which is why the weekday occasionally jumps. Over the six years in the table above you can watch both patterns: the single-step years and the leap-year double step.
This matters more than it sounds if you are planning around a weekend. An event that lands on a Saturday this year may fall midweek in two years' time, which changes everything from travel to time off.
About First Day of Fall 2027
The september equinox of 2027 falls on September 23, 2027 at 05:56 UTC — the astronomical start of fall in the Northern Hemisphere (spring below the equator).
Astronomically, this is the Sun crosses the equator heading south — spring in the Southern Hemisphere. It is also the day the tide of daylight turns: after the September solstice the change is barely minutes per week, then accelerates — the reason the weeks after a solstice feel darker (or lighter) faster than the solstice day itself.
Quick facts
| Exact moment (UTC) | September 23, 2027 · 05:56 |
|---|---|
| Event | September Equinox |
| Hemisphere note | Seasons flip in the Southern Hemisphere |