Season
How Many Days Until Fall 2027?
Today: · Eastern Time (America/New_York)
Calendar days until Fall
334 days until Fall
First Day of Fall is on Thursday, September 23, 2027.
Live countdown to midnight on September 23, 2027
333 days, 17 hours, 25 minutes, 51 seconds remaining
Eastern Time (America/New_York). Countdown days are 24 hours; the calendar-day count above uses local dates.
- Calendar days (signed)
- 334
- Full weeks + days
- 47 weeks + 5 days
- Calendar months + days
- 10 months + 30 days
- Years, months, days
- 0 years, 10 months, 30 days
- Weekdays counted
- 239
- Weekend days counted
- 95
- U.S. business days
- 229
- Observed holiday dates skipped
- 10
What is the first day of fall?
The first day of fall, or autumn, in the Northern Hemisphere is the September equinox, when day and night are nearly equal. From here, nights grow longer than days until the spring equinox. In the Southern Hemisphere it marks the start of spring.
History of the first day of fall
Harvest festivals around the equinox are ancient. The full moon closest to the September equinox is called the Harvest Moon, because its bright light once let farmers work late into the evening.
The first day of fall today
Japan observes Autumnal Equinox Day as a national holiday, and many communities hold harvest festivals, apple picking and pumpkin events. Meteorological fall begins September 1.
Date details
- Category
- Season
- How the date is set
- Set by a yearly rule
- Country / region
- United States
- Actual event date
The September equinox marks the start of astronomical fall (autumn) in the Northern Hemisphere. Dates use Eastern Time; the moment can fall on the previous or next calendar day elsewhere. Meteorological fall begins September 1.
Source: U.S. Naval Observatory
Event date facts
- Weekday
- Thursday
- ISO week / year
- 38 / 2027
- Day of year
- 266
- Quarter
- 3
- Days left in year
- 99
- Leap year
- No
September 2027
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
| Target | ||||||
Event dates by year
| Rule year | Actual date | Observed federal closure | Certainty |
|---|---|---|---|
| 2025 | No date available | — | Date awaiting announcement |
| 2026 | Tuesday, September 22, 2026 | — | Set by a yearly rule |
| 2027 | Thursday, September 23, 2027 | — | Set by a yearly rule |
| 2028 | Friday, September 22, 2028 | — | Set by a yearly rule |
| 2029 | Saturday, September 22, 2029 | — | Set by a yearly rule |
Quick answers
- What day of the week is September 23, 2027?
- September 23, 2027 is a Thursday.
- Is Fall a federal holiday?
- No. First Day of Fall is not a U.S. federal holiday, so federal offices and most businesses stay open.
- What week of the year is September 23, 2027?
- September 23, 2027 is in ISO week 38 of 2027 and is day 266 of the year.
How the Fall date is calculated
- The first day of fall is the date of the September equinox, when the Sun crosses the celestial equator heading south (Northern Hemisphere). The moment comes about six hours later each year and jumps back after each leap day, so the date can move by a day.
- In 2027 it falls on Thursday, September 23, 2027 in Eastern Time, from U.S. Naval Observatory data.
- The countdown counts calendar days from today to September 23, 2027. The start date is excluded and the end date is included. Dates use Eastern Time (America/New_York).
- The live countdown runs to midnight at the start of September 23, 2027 in Eastern Time (America/New_York). A countdown day is 24 hours, so a daylight-saving change can make it differ from the calendar-day count by an hour.
- Calculated at 6:34 AM on October 24, 2026.
- U.S. business days exclude Saturday, Sunday and observed nationwide federal closures; individual employer and state schedules are not included.