Days until March 31
March 31 falls on a Tuesday in 2026 and a Wednesday in 2027. The count runs from today’s date on your device to the next March 31; pick another date to count from it instead.
- Days until March 31
- 182
From September 30, 2026, there are 182 days until March 31 on Wednesday, March 31, 2027.
- Date
- Wednesday, March 31, 2027
- Day of the week
- Wednesday
- In weeks
- 26 weeks
Answer for the example date Wednesday, September 30, 2026. It changes to today's date when the page loads.
Days until March 31: 182. From September 30, 2026, there are 182 days until March 31 on Wednesday, March 31, 2027.
Where is March 31 on the calendar?
How to calculate
Counts the days from today, or any date you choose, to the next March 31, 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 182 days until March 31 on Wednesday, March 31, 2027.
Method: Find the first March 31 on or after the start date, then count the days from the start date to it.
- March 31 comes every year, so the count is never more than 365 days.
- The start date itself is not counted: from the day before March 31, the count is 1; on March 31 itself, it is 0.
- Start dates from January 1, 1900 to December 31, 2400 work for the count to March 31, the range the date field accepts.
- Today is the date on your own device, so the count to March 31 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 2027-03-31 gives Date 2027-03-31, Days until March 31 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 2027-03-31, Days until March 31 89.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2027-04-01 gives Date 2028-03-31, Days until March 31 365.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 March 31?
Tuesday, March 31, 2026; Wednesday, March 31, 2027; Friday, March 31, 2028. The weekday of March 31 moves on one day a year, or two when a February 29 falls between.
What day of the year is March 31?
March 31 is day 90 of a common year and day 91 of a leap year, such as 2028. Either way, 275 days of the year come after it.
What season is March 31 in?
In the Northern Hemisphere, March 31 is in spring in every year from 2026 to 2035; in the Southern Hemisphere, it is autumn. Seasons here start on the astronomical equinoxes and solstices, dated in US Eastern Time.
Is March 31 a US federal holiday?
No. No US federal holiday falls on March 31. The next one in the calendar after March 31 is Memorial Day, which falls between May 25 and May 31.
How are the days until March 31 counted?
From the start date to March 31, without counting the start date: from March 30 the count is 1, and on March 31 it is 0. The day after, it moves on to the next March 31: from April 1, 2026, that is March 31, 2027, 364 days away.