Days until January 18
January 18 falls on a Sunday in 2026 and a Monday in 2027. The count runs from today’s date on your device to the next January 18; pick another date to count from it instead.
- Days until January 18
- 110
From September 30, 2026, there are 110 days until January 18 on Monday, January 18, 2027.
- Date
- Monday, January 18, 2027
- Day of the week
- Monday
- In weeks
- 15 weeks and 5 days
Answer for the example date Wednesday, September 30, 2026. It changes to today's date when the page loads.
Days until January 18: 110. From September 30, 2026, there are 110 days until January 18 on Monday, January 18, 2027.
Where is January 18 on the calendar?
How to calculate
Counts the days from today, or any date you choose, to the next January 18, 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 110 days until January 18 on Monday, January 18, 2027.
Method: Find the first January 18 on or after the start date, then count the days from the start date to it.
- January 18 comes every year, so the count is never more than 365 days.
- The start date itself is not counted: from the day before January 18, the count is 1; on January 18 itself, it is 0.
- Start dates from January 1, 1900 to December 31, 2400 work for the count to January 18, the range the date field accepts.
- Today is the date on your own device, so the count to January 18 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 2027-01-18 gives Date 2027-01-18, Days until January 18 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 2027-01-18, Days until January 18 17.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2027-01-19 gives Date 2028-01-18, Days until January 18 364.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 18?
Sunday, January 18, 2026; Monday, January 18, 2027; Tuesday, January 18, 2028. The weekday of January 18 moves on one day a year, or two when a February 29 falls between.
What day of the year is January 18?
January 18 is day 18 of the year, with 347 days after it (348 in a leap year).
What season is January 18 in?
In the Northern Hemisphere, January 18 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 18 a US federal holiday?
In some years. Martin Luther King Jr. Day, a US federal holiday that moves with the weekday, falls on January 18 in 2027, 2038, and 2044.
How are the days until January 18 counted?
From the start date to January 18, without counting the start date: from January 17 the count is 1, and on January 18 it is 0. The day after, it moves on to the next January 18: from January 19, 2026, that is January 18, 2027, 364 days away.