Week 38 2023

Week 38 2023
Week Number 38 in 2023

Week Numbers ﹣ Week 38 2023

Week Number 38 of the current year 2023 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, September 18, 2023 – Sunday, September 24, 2023

ISO: 2023‑W38
Week Number 2023

American calculation

In the USA, Canada and most Latin American countries, Australia, Japan, Israel, South Korea and others, the following definition of Week 38 applies:

Week Number 38/2023

Sunday, September 17, 2023

Saturday, September 23, 2023


The date of the calendar Week  38 and other years

The following table provides an overview of the calendar Week 38 for each year. The beginning of the calendar Week 38 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 38, 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 38
Year Calculation
Start of Week 38End of Week 38ISO Name
2020 European Monday, September 14, 2020Sunday, September 20, 20202020‑W38
American Sunday, September 13, 2020Saturday, September 19, 2020-
2021 European Monday, September 20, 2021Sunday, September 26, 20212021‑W38
American Sunday, September 12, 2021Saturday, September 18, 2021-
2022 European Monday, September 19, 2022Sunday, September 25, 20222022‑W38
American Sunday, September 11, 2022Saturday, September 17, 2022-
2023 European Monday, September 18, 2023Sunday, September 24, 20232023‑W38
American Sunday, September 17, 2023Saturday, September 23, 2023-
2024 European Monday, September 16, 2024Sunday, September 22, 20242024‑W38
American Sunday, September 15, 2024Saturday, September 21, 2024-
2025 European Monday, September 15, 2025Sunday, September 21, 20252025‑W38
American Sunday, September 14, 2025Saturday, September 20, 2025-
2026 European Monday, September 14, 2026Sunday, September 20, 20262026‑W38
American Sunday, September 13, 2026Saturday, September 19, 2026-

Determine Week 38 or other calendar weeks in the calculator

In the Calendar Week Calculator, the entry for the European ISO calendar Week 38 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 on September 26, 2023

The pages of the 'Week Numbers' category were last editorially reviewed by Michael Mühl on September 26, 2023. They all correspond to the current status.

Previous changes on June 25, 2021