# Days until February 13

Counts the days from today, or any date you choose, to the next February 13, with its day of the week.

- Page: https://www.acalculator.org/days/days-until-february-13
- JSON spec: https://www.acalculator.org/days/days-until-february-13.json
- Version: b01108cbdfda

## 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 136 days until February 13 on Saturday, February 13, 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 13 | Whole days from the start date to the next February 13; 0 on the day itself. |
| date | Date | The next February 13 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 13 on or after the start date, then count the days from the start date to it.

## Assumptions

- February 13 comes every year, so the count is never more than 365 days.
- The start date itself is not counted: from the day before February 13, the count is 1; on February 13 itself, it is 0.
- Start dates from January 1, 1900 to December 31, 2400 work for the count to February 13, the range the date field accepts.
- Today is the date on your own device, so the count to February 13 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 = 2027-02-13 gives date = 2027-02-13, 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 = 2027-02-13, days = 43. Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years).
3. from = 2027-02-14 gives date = 2028-02-13, 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 13?

Friday, February 13, 2026; Saturday, February 13, 2027; Sunday, February 13, 2028. The weekday of February 13 moves on one day a year, or two when a February 29 falls between.

### What day of the year is February 13?

February 13 is day 44 of the year, with 321 days after it (322 in a leap year).

### What season is February 13 in?

In the Northern Hemisphere, February 13 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 13 a US federal holiday?

No. No US federal holiday falls on February 13. The next one in the calendar after February 13 is Washington's Birthday (Presidents' Day), which falls between February 15 and February 21.

### How are the days until February 13 counted?

From the start date to February 13, without counting the start date: from February 12 the count is 1, and on February 13 it is 0. The day after, it moves on to the next February 13: from February 14, 2026, that is February 13, 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.