Days until January 17
January 17 falls on a Saturday in 2026 and a Sunday in 2027. The count runs from today’s date on your device to the next January 17; pick another date to count from it instead.
- Days until January 17
- 109
From September 30, 2026, there are 109 days until January 17 on Sunday, January 17, 2027.
- Date
- Sunday, January 17, 2027
- Day of the week
- Sunday
- In weeks
- 15 weeks and 4 days
Answer for the example date Wednesday, September 30, 2026. It changes to today's date when the page loads.
Days until January 17: 109. From September 30, 2026, there are 109 days until January 17 on Sunday, January 17, 2027.
Where is January 17 on the calendar?
How to calculate
Counts the days from today, or any date you choose, to the next January 17, 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 109 days until January 17 on Sunday, January 17, 2027.
Method: Find the first January 17 on or after the start date, then count the days from the start date to it.
- January 17 comes every year, so the count is never more than 365 days.
- The start date itself is not counted: from the day before January 17, the count is 1; on January 17 itself, it is 0.
- Start dates from January 1, 1900 to December 31, 2400 work for the count to January 17, the range the date field accepts.
- Today is the date on your own device, so the count to January 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
Each example is checked against the calculator on every build.
- Count from 2027-01-17 gives Date 2027-01-17, Days until January 17 0.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2027-01-01 gives Date 2027-01-17, Days until January 17 16.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2027-01-18 gives Date 2028-01-17, Days until January 17 364.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 17?
Saturday, January 17, 2026; Sunday, January 17, 2027; Monday, January 17, 2028. The weekday of January 17 moves on one day a year, or two when a February 29 falls between.
What day of the year is January 17?
January 17 is day 17 of the year, with 348 days after it (349 in a leap year).
What season is January 17 in?
In the Northern Hemisphere, January 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 January 17 a US federal holiday?
In some years. Martin Luther King Jr. Day, a US federal holiday that moves with the weekday, falls on January 17 in 2028, 2033, and 2039.
How are the days until January 17 counted?
From the start date to January 17, without counting the start date: from January 16 the count is 1, and on January 17 it is 0. The day after, it moves on to the next January 17: from January 18, 2026, that is January 17, 2027, 364 days away.