Week Number 43 of the current year 2025 is defined as follows.
European and Asian calculation
Mainly in Europe and Asia, the international ISO 8601 definition is used for counting calendar weeks:
American calculation
In the USA, Canada and most Latin American countries, Australia, Japan, Israel, South Korea and others, the following definition of Week 43 applies:
The date of the calendar Week 43 and other years
The following table provides an overview of the calendar Week 43 for each year. The beginning of the calendar Week 43 and its end are shown according to the two most commonly used definitions of calendar weeks worldwide. The first is the international ISO standard for Week 43, referred to here as the "European" calculation method. It is mainly used in Europe and Asia. On the other hand, the "American" calculation method for weeks is listed, which is mainly used in North and South America, Australia and Japan.
| Week Number 43 | ||||
|---|---|---|---|---|
| Year |
Calculation Method | Start of Week 43 | End of Week 43 | ISO Name |
| 2022 | European | Monday, October 24, 2022 | Sunday, October 30, 2022 | 2022‑W43 |
| American | Sunday, October 16, 2022 | Saturday, October 22, 2022 | - | |
| 2023 | European | Monday, October 23, 2023 | Sunday, October 29, 2023 | 2023‑W43 |
| American | Sunday, October 22, 2023 | Saturday, October 28, 2023 | - | |
| 2024 | European | Monday, October 21, 2024 | Sunday, October 27, 2024 | 2024‑W43 |
| American | Sunday, October 20, 2024 | Saturday, October 26, 2024 | - | |
| 2025 | European | Monday, October 20, 2025 | Sunday, October 26, 2025 | 2025‑W43 |
| American | Sunday, October 19, 2025 | Saturday, October 25, 2025 | - | |
| 2026 | European | Monday, October 19, 2026 | Sunday, October 25, 2026 | 2026‑W43 |
| American | Sunday, October 18, 2026 | Saturday, October 24, 2026 | - | |
| 2027 | European | Monday, October 25, 2027 | Sunday, October 31, 2027 | 2027‑W43 |
| American | Sunday, October 17, 2027 | Saturday, October 23, 2027 | - | |
| 2028 | European | Monday, October 23, 2028 | Sunday, October 29, 2028 | 2028‑W43 |
| American | Sunday, October 15, 2028 | Saturday, October 21, 2028 | - | |
Determine Week 43 or other calendar weeks in the calculator
In the Calendar Week Calculator, the entry for the European ISO calendar Week 43 is preset. Of course, you can also enter other values here to determine the date of the beginning of the week or the end of the week.
Calendar Week Calculator for other years
For calendar years further back or in the future, you will find the beginning and end of the corresponding calendar week in the Calendar Week Calculator.
Source information
As source for the information in the 'Week Numbers' category, we have used in particular:
Last update
This page of the 'Week Numbers' category was last edited or reviewed by Michael Mühl. It corresponds to the current status.
Changes in this category "Week Numbers"
- Weekly update of the page for the current calendar week.
- Publication of the Week Number Calculator
- Editorial revision of this page