Week 42 2023

Week 42 2023
Week Number 42 in 2023

Week Numbers ﹣ Week 42 2023

Week Number 42 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, October 16, 2023 – Sunday, October 22, 2023

ISO: 2023‑W42
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 42 applies:

Week Number 42/2023

Sunday, October 15, 2023

Saturday, October 21, 2023


The date of the calendar Week  42 and other years

The following table provides an overview of the calendar Week 42 for each year. The beginning of the calendar Week 42 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 42, 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 42
Year Calculation
Start of Week 42End of Week 42ISO Name
2020 European Monday, October 12, 2020Sunday, October 18, 20202020‑W42
American Sunday, October 11, 2020Saturday, October 17, 2020-
2021 European Monday, October 18, 2021Sunday, October 24, 20212021‑W42
American Sunday, October 10, 2021Saturday, October 16, 2021-
2022 European Monday, October 17, 2022Sunday, October 23, 20222022‑W42
American Sunday, October 9, 2022Saturday, October 15, 2022-
2023 European Monday, October 16, 2023Sunday, October 22, 20232023‑W42
American Sunday, October 15, 2023Saturday, October 21, 2023-
2024 European Monday, October 14, 2024Sunday, October 20, 20242024‑W42
American Sunday, October 13, 2024Saturday, October 19, 2024-
2025 European Monday, October 13, 2025Sunday, October 19, 20252025‑W42
American Sunday, October 12, 2025Saturday, October 18, 2025-
2026 European Monday, October 12, 2026Sunday, October 18, 20262026‑W42
American Sunday, October 11, 2026Saturday, October 17, 2026-

Determine Week 42 or other calendar weeks in the calculator

In the Calendar Week Calculator, the entry for the European ISO calendar Week 42 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 March 21, 2023

The pages of the 'Week Numbers' category were last editorially reviewed by Michael Mühl on March 21, 2023. They all correspond to the current status.

Previous changes on June 25, 2021