# Days until February 17

Counts the days from today, or any date you choose, to the next February 17, with its day of the week.

- Page: https://www.acalculator.org/days/days-until-february-17
- JSON spec: https://www.acalculator.org/days/days-until-february-17.json
- Version: 989496b18a32

## 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 140 days until February 17 on Wednesday, February 17, 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 February 17 | Whole days from the start date to the next February 17; 0 on the day itself. |
| date | Date | The next February 17 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 February 17 on or after the start date, then count the days from the start date to it.

## Assumptions

- February 17 comes every year, so the count is never more than 365 days.
- The start date itself is not counted: from the day before February 17, the count is 1; on February 17 itself, it is 0.
- Start dates from January 1, 1900 to December 31, 2400 work for the count to February 17, the range the date field accepts.
- Today is the date on your own device, so the count to February 17 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 = 2027-02-17 gives date = 2027-02-17, 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 = 2027-02-17, days = 47. Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years).
3. from = 2027-02-18 gives date = 2028-02-17, days = 364. 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 February 17?

Tuesday, February 17, 2026; Wednesday, February 17, 2027; Thursday, February 17, 2028. The weekday of February 17 moves on one day a year, or two when a February 29 falls between.

### What day of the year is February 17?

February 17 is day 48 of the year, with 317 days after it (318 in a leap year).

### What season is February 17 in?

In the Northern Hemisphere, February 17 is in winter in every year from 2026 to 2035; in the Southern Hemisphere, it is summer. Seasons here start on the astronomical equinoxes and solstices, dated in US Eastern Time.

### Is February 17 a US federal holiday?

In some years. Washington's Birthday (Presidents' Day), a US federal holiday that moves with the weekday, falls on February 17 in 2031, 2042, and 2048.

### How are the days until February 17 counted?

From the start date to February 17, without counting the start date: from February 16 the count is 1, and on February 17 it is 0. The day after, it moves on to the next February 17: from February 18, 2026, that is February 17, 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.