Week Number 50 (Week 50) 2021

Updated on by Michael Mühl

Week Number 50 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 50/2021

Monday, December 13, 2021

Sunday, December 19, 2021

ISO: 2021‑W50

American calculation

In the USA, Canada and most Latin American countries, Australia, Japan, Israel, South Korea and others, the following definition of Week 50 applies:

Week Number 50/2021

Sunday, December 5, 2021

Saturday, December 11, 2021

The date of the calendar Week 50 (Week 50) in the past and coming years

The following table provides an overview of the calendar Week 50 for each year. The beginning of the calendar Week 50 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 50, 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 50
Year Calculation
Method
Start of Week 50End of Week 50ISO Name
2011 European Monday, December 12, 2011Sunday, December 18, 20112011‑W50
American Sunday, December 4, 2011Saturday, December 10, 2011-
2012 European Monday, December 10, 2012Sunday, December 16, 20122012‑W50
American Sunday, December 9, 2012Saturday, December 15, 2012-
2013 European Monday, December 9, 2013Sunday, December 15, 20132013‑W50
American Sunday, December 8, 2013Saturday, December 14, 2013-
2014 European Monday, December 8, 2014Sunday, December 14, 20142014‑W50
American Sunday, December 7, 2014Saturday, December 13, 2014-
2015 European Monday, December 7, 2015Sunday, December 13, 20152015‑W50
American Sunday, December 6, 2015Saturday, December 12, 2015-
2016 European Monday, December 12, 2016Sunday, December 18, 20162016‑W50
American Sunday, December 4, 2016Saturday, December 10, 2016-
2017 European Monday, December 11, 2017Sunday, December 17, 20172017‑W50
American Sunday, December 10, 2017Saturday, December 16, 2017-
2018 European Monday, December 10, 2018Sunday, December 16, 20182018‑W50
American Sunday, December 9, 2018Saturday, December 15, 2018-
2019 European Monday, December 9, 2019Sunday, December 15, 20192019‑W50
American Sunday, December 8, 2019Saturday, December 14, 2019-
2020 European Monday, December 7, 2020Sunday, December 13, 20202020‑W50
American Sunday, December 6, 2020Saturday, December 12, 2020-
2021 European Monday, December 13, 2021Sunday, December 19, 20212021‑W50
American Sunday, December 5, 2021Saturday, December 11, 2021-
2022 European Monday, December 12, 2022Sunday, December 18, 20222022‑W50
American Sunday, December 4, 2022Saturday, December 10, 2022-
2023 European Monday, December 11, 2023Sunday, December 17, 20232023‑W50
American Sunday, December 10, 2023Saturday, December 16, 2023-
2024 European Monday, December 9, 2024Sunday, December 15, 20242024‑W50
American Sunday, December 8, 2024Saturday, December 14, 2024-
2025 European Monday, December 8, 2025Sunday, December 14, 20252025‑W50
American Sunday, December 7, 2025Saturday, December 13, 2025-
2026 European Monday, December 7, 2026Sunday, December 13, 20262026‑W50
American Sunday, December 6, 2026Saturday, December 12, 2026-
2027 European Monday, December 13, 2027Sunday, December 19, 20272027‑W50
American Sunday, December 5, 2027Saturday, December 11, 2027-
2028 European Monday, December 11, 2028Sunday, December 17, 20282028‑W50
American Sunday, December 3, 2028Saturday, December 9, 2028-
2029 European Monday, December 10, 2029Sunday, December 16, 20292029‑W50
American Sunday, December 9, 2029Saturday, December 15, 2029-
2030 European Monday, December 9, 2030Sunday, December 15, 20302030‑W50
American Sunday, December 8, 2030Saturday, December 14, 2030-
2031 European Monday, December 8, 2031Sunday, December 14, 20312031‑W50
American Sunday, December 7, 2031Saturday, December 13, 2031-

Determine Week 50 or other calendar weeks in the calculator

In the Calendar Week Calculator, the entry for the European ISO calendar Week 50 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