Days until Sunday
Sunday is the first day of the week on a US calendar, which starts on Sunday, and day 7 of the ISO week, which starts on Monday. The count starts from today’s date; pick another date to count from it instead.
- Days until Sunday
- 4
From September 30, 2026, there are 4 days until Sunday, October 4, 2026.
- Next Sunday
- October 4, 2026
- The Sunday after
- October 11, 2026
Answer for the example date Wednesday, September 30, 2026. It changes to today's date when the page loads.
Days until Sunday: 4. From September 30, 2026, there are 4 days until Sunday, October 4, 2026.
Where is the next Sunday?
How to calculate
Counts the days from today, or any date you choose, to the next Sunday, with its date and the Sunday after it.
Example with the default inputs (Count from September 30, 2026) on the example date Wednesday, September 30, 2026: From September 30, 2026, there are 4 days until Sunday, October 4, 2026.
Method: Days until Sunday = (0 − the start date’s weekday + 7) mod 7, with Sunday = 0, Monday = 1, …, Saturday = 6.
- On a Sunday, the count is 0; the Sunday after is 7 days away.
- The start date itself is not counted: from the day before, the count is 1.
- Dates are calendar days with no time of day, so a time zone or a daylight-saving change never adds or loses a day.
- Start dates from January 1, 1900 to December 31, 2400 work.
Worked examples
Each example is checked against the calculator on every build.
- Count from 2026-09-28 gives Next Sunday 2026-10-04, Days until Sunday 6.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2026-12-31 gives Next Sunday 2027-01-03, Days until Sunday 3.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2028-02-27 gives Next Sunday 2028-02-27, Days until Sunday 0.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
Other questions people ask
How many days until Sunday from each day of the week?
From Monday, 6; from Tuesday, 5; from Wednesday, 4; from Thursday, 3; from Friday, 2; from Saturday, 1; from Sunday, 0. On a Sunday the count is 0, and the Sunday after is 7 days away.
What if today is Sunday?
Then the count is 0, because the next Sunday on or after today is today. The page also shows the Sunday after it, 7 days later.
How many Sundays are in a year?
A year of 365 days is 52 weeks and 1 day, so the weekday of January 1 comes 53 times and every other weekday 52 times; in a leap year, the weekdays of January 1 and 2 come 53 times. 2026 has 52 Sundays, and 2027 has 52.
How are the days until Sunday counted?
From the start date (today, unless you change it) to the next Sunday, without counting the start date, in calendar days. Weekends and holidays count like any other day.