Days until May 15
May 15 falls on a Friday in 2026 and a Saturday in 2027. The count runs from today’s date on your device to the next May 15; pick another date to count from it instead.
- Days until May 15
- 227
From September 30, 2026, there are 227 days until May 15 on Saturday, May 15, 2027.
- Date
- Saturday, May 15, 2027
- Day of the week
- Saturday
- In weeks
- 32 weeks and 3 days
Answer for the example date Wednesday, September 30, 2026. It changes to today's date when the page loads.
Days until May 15: 227. From September 30, 2026, there are 227 days until May 15 on Saturday, May 15, 2027.
Where is May 15 on the calendar?
How to calculate
Counts the days from today, or any date you choose, to the next May 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 227 days until May 15 on Saturday, May 15, 2027.
Method: Find the first May 15 on or after the start date, then count the days from the start date to it.
- May 15 comes every year, so the count is never more than 365 days.
- The start date itself is not counted: from the day before May 15, the count is 1; on May 15 itself, it is 0.
- Start dates from January 1, 1900 to December 31, 2400 work for the count to May 15, the range the date field accepts.
- Today is the date on your own device, so the count to May 15 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 2027-05-15 gives Date 2027-05-15, Days until May 15 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 2027-05-15, Days until May 15 134.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2027-05-16 gives Date 2028-05-15, Days until May 15 365.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 May 15?
Friday, May 15, 2026; Saturday, May 15, 2027; Monday, May 15, 2028. The weekday of May 15 moves on one day a year, or two when a February 29 falls between.
What day of the year is May 15?
May 15 is day 135 of a common year and day 136 of a leap year, such as 2028. Either way, 230 days of the year come after it.
What season is May 15 in?
In the Northern Hemisphere, May 15 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 May 15 a US federal holiday?
No. No US federal holiday falls on May 15. The next one in the calendar after May 15 is Memorial Day, which falls between May 25 and May 31.
How are the days until May 15 counted?
From the start date to May 15, without counting the start date: from May 14 the count is 1, and on May 15 it is 0. The day after, it moves on to the next May 15: from May 16, 2026, that is May 15, 2027, 364 days away.