When is week 43?
In 2026, week 43 runs from Monday, October 19, 2026 to Sunday, October 25, 2026.
It starts in 17 days.
Week 43 in other years
| Year | Starts | Ends |
|---|---|---|
| 2025 | Mon, Oct 20, 2025 | Sun, Oct 26, 2025 |
| 2026 | Mon, Oct 19, 2026 | Sun, Oct 25, 2026 |
| 2027 | Mon, Oct 25, 2027 | Sun, Oct 31, 2027 |
| 2028 | Mon, Oct 23, 2028 | Sun, Oct 29, 2028 |
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Questions & answers
What dates are in week 43?
In 2026, week 43 is October 19, 2026 to October 25, 2026.
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.