Week 53 of 2026: Dates
Week 53 of 2026 starts on Monday, December 28, 2026 and ends on Sunday, January 3, 2027. It falls in December and January, in the fourth quarter of 2026.
The days of week 53, 2026
| Day | Date | Day of year | US federal holiday |
|---|---|---|---|
| Monday | December 28, 2026 | Day 362 | |
| Tuesday | December 29, 2026 | Day 363 | |
| Wednesday | December 30, 2026 | Day 364 | |
| Thursday | December 31, 2026 | Day 365 | |
| Friday | January 1, 2027 | Day 1 | New Year's Day |
| Saturday | January 2, 2027 | Day 2 | |
| Sunday | January 3, 2027 | Day 3 |
Other days in this week: New Year's Day, New Year's Eve.
ISO and US week numbers
Week 53 covers the last days of 2026 and the first 3 days of 2027. US calendars start the week a day earlier, on Sunday, December 27. On that count the same Monday is in week 53 of 2026, so here the two numbers match. To check it in Excel or Google Sheets, =ISOWEEKNUM(DATE(2026,12,28)) returns 53 and =WEEKNUM(DATE(2026,12,28)) returns 53.
Week 53 by year
| Year | Monday | Sunday |
|---|---|---|
| 2026 | December 28, 2026 | January 3, 2027 |
| 2032 | December 27, 2032 | January 2, 2033 |
| 2037 | December 28, 2037 | January 3, 2038 |
| 2043 | December 28, 2043 | January 3, 2044 |
| 2048 | December 28, 2048 | January 3, 2049 |
| 2054 | December 28, 2054 | January 3, 2055 |
Only years that start on a Thursday, or leap years that start on a Wednesday, have an ISO week 53.
This page shows the next week 53 that has not ended yet. ISO weeks start on Monday, and week 1 contains the year's first Thursday.
Week 53 questions
When does week 53 of 2026 start?
On Monday, December 28, 2026. It ends on Sunday, January 3, 2027, seven days later.
Does every year have a week 53?
No. Only years that start on a Thursday, or leap years that start on a Wednesday, have an ISO week 53. The next one is 2026.
Related pages
Cite this page
APA: ClockTotals. (2026, October 27). Week 53 of 2026: Dates. https://clocktotals.com/week-number/53/
MLA: “Week 53 of 2026: Dates.” ClockTotals, 27 Oct. 2026, clocktotals.com/week-number/53/.
Link (HTML): <a href="https://clocktotals.com/week-number/53/">Week 53 of 2026: Dates</a>