Days until June 21
June 21 falls on a Sunday in 2026 and a Monday in 2027. The count runs from today’s date on your device to the next June 21; pick another date to count from it instead.
- Days until June 21
- 264
From September 30, 2026, there are 264 days until June 21 on Monday, June 21, 2027.
- Date
- Monday, June 21, 2027
- Day of the week
- Monday
- In weeks
- 37 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 June 21: 264. From September 30, 2026, there are 264 days until June 21 on Monday, June 21, 2027.
Where is June 21 on the calendar?
How to calculate
Counts the days from today, or any date you choose, to the next June 21, 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 264 days until June 21 on Monday, June 21, 2027.
Method: Find the first June 21 on or after the start date, then count the days from the start date to it.
- June 21 comes every year, so the count is never more than 365 days.
- The start date itself is not counted: from the day before June 21, the count is 1; on June 21 itself, it is 0.
- Start dates from January 1, 1900 to December 31, 2400 work for the count to June 21, the range the date field accepts.
- Today is the date on your own device, so the count to June 21 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 2027-06-21 gives Date 2027-06-21, Days until June 21 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 2027-06-21, Days until June 21 171.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2027-06-22 gives Date 2028-06-21, Days until June 21 365.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 June 21?
Sunday, June 21, 2026; Monday, June 21, 2027; Wednesday, June 21, 2028. The weekday of June 21 moves on one day a year, or two when a February 29 falls between.
What day of the year is June 21?
June 21 is day 172 of a common year and day 173 of a leap year, such as 2028. Either way, 193 days of the year come after it.
What season is June 21 in?
In the Northern Hemisphere, June 21 is the first day of summer (the June solstice) in 2026, 2027, 2030, 2031, 2034, and 2035 and in summer in 2028, 2029, 2032, and 2033, because the equinox or solstice moves by a day between years. Seasons here start on the astronomical equinoxes and solstices, dated in US Eastern Time.
Is June 21 a US federal holiday?
No. No US federal holiday falls on June 21. The next one in the calendar after June 21 is Independence Day, which falls on July 4.
How are the days until June 21 counted?
From the start date to June 21, without counting the start date: from June 20 the count is 1, and on June 21 it is 0. The day after, it moves on to the next June 21: from June 22, 2026, that is June 21, 2027, 364 days away.