Days until Mother’s Day
Mother’s Day 2027 is on Sunday, May 9, 2027. The count starts from today’s date; pick another date to count from it instead.
- Days until Mother’s Day
- 222
From September 29, 2026, there are 222 days until Mother’s Day on Sunday, May 9, 2027.
- Date
- Sunday, May 9, 2027
- Day of the week
- Sunday
- In weeks
- 31 weeks and 5 days
Answer for the example date Tuesday, September 29, 2026. It changes to today's date when the page loads.
Days until Mother’s Day: 222. From September 29, 2026, there are 222 days until Mother’s Day on Sunday, May 9, 2027.
Where is Mother’s Day on the calendar?
How to calculate
Counts the days from today, or any date you choose, to the next Mother’s Day, with its date and day of the week.
Example with the default inputs (Count from September 29, 2026) on the example date Tuesday, September 29, 2026: From September 29, 2026, there are 222 days until Mother’s Day on Sunday, May 9, 2027.
Method: Find the first date of Mother’s Day on or after the start date, then count the days from the start date to it.
- US Mother’s Day is the second Sunday of May (36 U.S.C. 117).
- Start dates from January 1, 1914 to December 31, 2400 work, because Mother’s Day was first proclaimed in 1914.
- The start date itself is not counted: from the day before, the count is 1; on the day itself, it is 0.
- Dates are calendar days with no time of day, so a time zone or a daylight-saving change never adds or loses a day.
Worked examples
Each example is checked against the calculator on every build.
- Count from 2026-01-01 gives Date 2026-05-10, Days until Mother’s Day 129.Source: 36 U.S.C. 117; the rule written again in Python 3 (datetime); docs/progress/WP-43.md
- Count from 2026-05-11 gives Date 2027-05-09, Days until Mother’s Day 363.Source: 36 U.S.C. 117; the rule written again in Python 3 (datetime); docs/progress/WP-43.md
Other questions people ask
When is Mother’s Day 2027?
Mother’s Day 2027 is on Sunday, May 9, 2027.
When is Mother’s Day 2028?
Mother’s Day 2028 is on Sunday, May 14, 2028.
How is the date of Mother’s Day set?
US Mother’s Day is the second Sunday of May (36 U.S.C. 117). Source: 36 U.S.C. 117.
How are the days until Mother’s Day counted?
From the start date (today, unless you change it) to the date, without counting the start date. The day before, the count is 1; on the day itself, it is 0; the day after, the count moves on to the next Mother’s Day.