Week 4 2025

Week 4 2025
Week Number 4 in 2025

Week Numbers ﹣ Week 4 2025

Week Number 4 of the next 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:

Monday, January 20, 2025 – Sunday, January 26, 2025

ISO: 2025‑W04
Week Number 2025

American calculation

In the USA, Canada and most Latin American countries, Australia, Japan, Israel, South Korea and others, the following definition of Week 4 applies:

Week Number 4/2025

Sunday, January 19, 2025

Saturday, January 25, 2025

The date of the calendar Week  4 and other years

The following table provides an overview of the calendar Week 4 for each year. The beginning of the calendar Week 4 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 4, 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 4
Year Calculation
Start of Week 4End of Week 4ISO Name
2022 European Monday, January 24, 2022Sunday, January 30, 20222022‑W04
American Sunday, January 16, 2022Saturday, January 22, 2022-
2023 European Monday, January 23, 2023Sunday, January 29, 20232023‑W04
American Sunday, January 22, 2023Saturday, January 28, 2023-
2024 European Monday, January 22, 2024Sunday, January 28, 20242024‑W04
American Sunday, January 21, 2024Saturday, January 27, 2024-
2025 European Monday, January 20, 2025Sunday, January 26, 20252025‑W04
American Sunday, January 19, 2025Saturday, January 25, 2025-
2026 European Monday, January 19, 2026Sunday, January 25, 20262026‑W04
American Sunday, January 18, 2026Saturday, January 24, 2026-
2027 European Monday, January 25, 2027Sunday, January 31, 20272027‑W04
American Sunday, January 17, 2027Saturday, January 23, 2027-
2028 European Monday, January 24, 2028Sunday, January 30, 20282028‑W04
American Sunday, January 16, 2028Saturday, January 22, 2028-

Determine Week 4 or other calendar weeks in the calculator

In the Calendar Week Calculator, the entry for the European ISO calendar Week 4 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"