# Days until September 22

Counts the days from today, or any date you choose, to the next September 22, with its day of the week.

- Page: https://www.acalculator.org/days/days-until-september-22
- JSON spec: https://www.acalculator.org/days/days-until-september-22.json
- Version: 2d402707982c

## Default answer

Example with the default inputs (Count from September 30, 2026) on the example date Wednesday, September 30, 2026: From September 30, 2026, there are 357 days until September 22 on Wednesday, September 22, 2027.

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| from | Count from | The date to count from. Today, unless you change it. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| days | Days until September 22 | Whole days from the start date to the next September 22; 0 on the day itself. |
| date | Date | The next September 22 on or after the start date. |
| weekday | Day of the week | The weekday of that date. |
| weeks | In weeks | The same number of days in weeks and days. |

## Method

Find the first September 22 on or after the start date, then count the days from the start date to it.

## Assumptions

- September 22 comes every year, so the count is never more than 365 days.
- The start date itself is not counted: from the day before September 22, the count is 1; on September 22 itself, it is 0.
- Start dates from January 1, 1900 to December 31, 2400 work for the count to September 22, the range the date field accepts.
- Today is the date on your own device, so the count to September 22 changes at midnight where you are. Dates are whole calendar days, so a daylight-saving change never adds or loses a day.

## Worked examples

1. from = 2027-09-22 gives date = 2027-09-22, days = 0. Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years).
2. from = 2027-01-01 gives date = 2027-09-22, days = 264. Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years).
3. from = 2027-09-23 gives date = 2028-09-22, days = 365. Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years).

## FAQ

### What day of the week is September 22?

Tuesday, September 22, 2026; Wednesday, September 22, 2027; Friday, September 22, 2028. The weekday of September 22 moves on one day a year, or two when a February 29 falls between.

### What day of the year is September 22?

September 22 is day 265 of a common year and day 266 of a leap year, such as 2028. Either way, 100 days of the year come after it.

### What season is September 22 in?

In the Northern Hemisphere, September 22 is the first day of fall (the September equinox) in 2026, 2028, 2029, 2030, 2032, 2033, and 2034 and in summer in 2027, 2031, and 2035, because the equinox or solstice moves by a day between years. Seasons here start on the astronomical equinoxes and solstices, dated in US Eastern Time.

### Is September 22 a US federal holiday?

No. No US federal holiday falls on September 22. The next one in the calendar after September 22 is Columbus Day, which falls between October 8 and October 14.

### How are the days until September 22 counted?

From the start date to September 22, without counting the start date: from September 21 the count is 1, and on September 22 it is 0. The day after, it moves on to the next September 22: from September 23, 2026, that is September 22, 2027, 364 days away.

## Sources

- 5 U.S.C. 6103 (federal holidays; weekend rule in 6103(b) and Executive Order 11582). Checked against OPM holiday schedules.
- Equinoxes and solstices: Jean Meeus, Astronomical Algorithms (2nd ed., 1998), chapter 27, checked against the US Naval Observatory.