Week Number 41 (Week 41) 2021

Updated on by Michael Mühl

Week Number 41 of the current year 2021 is defined as follows:

European and Asian calculation

Mainly in Europe and Asia, the international ISO 8601 definition is used for counting calendar weeks:

Week Number 41/2021

Monday, October 11, 2021

Sunday, October 17, 2021

ISO: 2021‑W41

American calculation

In the USA, Canada and most Latin American countries, Australia, Japan, Israel, South Korea and others, the following definition of Week 41 applies:

Week Number 41/2021

Sunday, October 3, 2021

Saturday, October 9, 2021

The date of the calendar Week 41 (Week 41) in the past and coming years

The following table provides an overview of the calendar Week 41 for each year. The beginning of the calendar Week 41 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 41, 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 41
Year Calculation
Method
Start of Week 41End of Week 41ISO Name
2011 European Monday, October 10, 2011Sunday, October 16, 20112011‑W41
American Sunday, October 2, 2011Saturday, October 8, 2011-
2012 European Monday, October 8, 2012Sunday, October 14, 20122012‑W41
American Sunday, October 7, 2012Saturday, October 13, 2012-
2013 European Monday, October 7, 2013Sunday, October 13, 20132013‑W41
American Sunday, October 6, 2013Saturday, October 12, 2013-
2014 European Monday, October 6, 2014Sunday, October 12, 20142014‑W41
American Sunday, October 5, 2014Saturday, October 11, 2014-
2015 European Monday, October 5, 2015Sunday, October 11, 20152015‑W41
American Sunday, October 4, 2015Saturday, October 10, 2015-
2016 European Monday, October 10, 2016Sunday, October 16, 20162016‑W41
American Sunday, October 2, 2016Saturday, October 8, 2016-
2017 European Monday, October 9, 2017Sunday, October 15, 20172017‑W41
American Sunday, October 8, 2017Saturday, October 14, 2017-
2018 European Monday, October 8, 2018Sunday, October 14, 20182018‑W41
American Sunday, October 7, 2018Saturday, October 13, 2018-
2019 European Monday, October 7, 2019Sunday, October 13, 20192019‑W41
American Sunday, October 6, 2019Saturday, October 12, 2019-
2020 European Monday, October 5, 2020Sunday, October 11, 20202020‑W41
American Sunday, October 4, 2020Saturday, October 10, 2020-
2021 European Monday, October 11, 2021Sunday, October 17, 20212021‑W41
American Sunday, October 3, 2021Saturday, October 9, 2021-
2022 European Monday, October 10, 2022Sunday, October 16, 20222022‑W41
American Sunday, October 2, 2022Saturday, October 8, 2022-
2023 European Monday, October 9, 2023Sunday, October 15, 20232023‑W41
American Sunday, October 8, 2023Saturday, October 14, 2023-
2024 European Monday, October 7, 2024Sunday, October 13, 20242024‑W41
American Sunday, October 6, 2024Saturday, October 12, 2024-
2025 European Monday, October 6, 2025Sunday, October 12, 20252025‑W41
American Sunday, October 5, 2025Saturday, October 11, 2025-
2026 European Monday, October 5, 2026Sunday, October 11, 20262026‑W41
American Sunday, October 4, 2026Saturday, October 10, 2026-
2027 European Monday, October 11, 2027Sunday, October 17, 20272027‑W41
American Sunday, October 3, 2027Saturday, October 9, 2027-
2028 European Monday, October 9, 2028Sunday, October 15, 20282028‑W41
American Sunday, October 1, 2028Saturday, October 7, 2028-
2029 European Monday, October 8, 2029Sunday, October 14, 20292029‑W41
American Sunday, October 7, 2029Saturday, October 13, 2029-
2030 European Monday, October 7, 2030Sunday, October 13, 20302030‑W41
American Sunday, October 6, 2030Saturday, October 12, 2030-
2031 European Monday, October 6, 2031Sunday, October 12, 20312031‑W41
American Sunday, October 5, 2031Saturday, October 11, 2031-

Determine Week 41 or other calendar weeks in the calculator

In the Calendar Week Calculator, the entry for the European ISO calendar Week 41 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 27, 2021

The pages of the "Week Numbers" category were last editorially reviewed by Michael Mühl on September 27, 2021. They all correspond to the current status.

Previous changes on June 25, 2020