When is week 53?
In 2026, week 53 runs from Monday, December 28, 2026 to Sunday, January 3, 2027.
It starts in 87 days.
Week 53 in other years
| Year | Starts | Ends |
|---|---|---|
| 2025 | No week 53 (52-week year) | |
| 2026 | Mon, Dec 28, 2026 | Sun, Jan 3, 2027 |
| 2027 | No week 53 (52-week year) | |
| 2028 | No week 53 (52-week year) | |
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Questions & answers
What dates are in week 53?
In 2026, week 53 is December 28, 2026 to January 3, 2027.
How are week numbers counted?
We use ISO 8601 week numbers: weeks start on Monday, and week 1 is the week that contains the first Thursday of the year.