acalculator

Days until January 15

January 15 falls on a Thursday in 2026 and a Friday in 2027. The count runs from today’s date on your device to the next January 15; pick another date to count from it instead.

Your numbers

Days until January 15
107

From September 30, 2026, there are 107 days until January 15 on Friday, January 15, 2027.

Date
Friday, January 15, 2027
Day of the week
Friday
In weeks
15 weeks and 2 days

Answer for the example date Wednesday, September 30, 2026. It changes to today's date when the page loads.

Days until January 15: 107. From September 30, 2026, there are 107 days until January 15 on Friday, January 15, 2027.

Where is January 15 on the calendar?

How to calculate

Counts the days from today, or any date you choose, to the next January 15, with its day of the week.

Example with the default inputs (Count from September 30, 2026) on the example date Wednesday, September 30, 2026: From September 30, 2026, there are 107 days until January 15 on Friday, January 15, 2027.

Method: Find the first January 15 on or after the start date, then count the days from the start date to it.

  • January 15 comes every year, so the count is never more than 365 days.
  • The start date itself is not counted: from the day before January 15, the count is 1; on January 15 itself, it is 0.
  • Start dates from January 1, 1900 to December 31, 2400 work for the count to January 15, the range the date field accepts.
  • Today is the date on your own device, so the count to January 15 changes at midnight where you are. Dates are whole calendar days, so a daylight-saving change never adds or loses a day.

Machine-readable copies: Markdown, JSON.

Worked examples

Each example is checked against the calculator on every build.

  1. Count from 2027-01-15 gives Date 2027-01-15, Days until January 15 0.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
  2. Count from 2027-01-01 gives Date 2027-01-15, Days until January 15 14.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
  3. Count from 2027-01-16 gives Date 2028-01-15, Days until January 15 364.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)

Other questions people ask

What day of the week is January 15?

Thursday, January 15, 2026; Friday, January 15, 2027; Saturday, January 15, 2028. The weekday of January 15 moves on one day a year, or two when a February 29 falls between.

What day of the year is January 15?

January 15 is day 15 of the year, with 350 days after it (351 in a leap year).

What season is January 15 in?

In the Northern Hemisphere, January 15 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 January 15 a US federal holiday?

In some years. Martin Luther King Jr. Day, a US federal holiday that moves with the weekday, falls on January 15 in 2029, 2035, and 2046.

How are the days until January 15 counted?

From the start date to January 15, without counting the start date: from January 14 the count is 1, and on January 15 it is 0. The day after, it moves on to the next January 15: from January 16, 2026, that is January 15, 2027, 364 days away.