Week Number 09

Week Number 9 in 2022
Week 9 2022

Thema Week Numbers ﹣ Week Number 09

Week Number 9 of the current year 2022 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 9/2022

Monday, February 28, 2022

Sunday, March 6, 2022

ISO: 2022‑W09

American calculation

In the USA, Canada and most Latin American countries, Australia, Japan, Israel, South Korea and others, the following definition of Week 9 applies:

Week Number 9/2022

Sunday, February 20, 2022

Saturday, February 26, 2022


The date of the calendar Week 9 (Week 9) 2022 and other years

The following table provides an overview of the calendar Week 9 for each year. The beginning of the calendar Week 9 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 9, 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 9
Year Calculation
Start of Week 9End of Week 9ISO Name
2019 European Monday, February 25, 2019Sunday, March 3, 20192019‑W09
American Sunday, February 24, 2019Saturday, March 2, 2019-
2020 European Monday, February 24, 2020Sunday, March 1, 20202020‑W09
American Sunday, February 23, 2020Saturday, February 29, 2020-
2021 European Monday, March 1, 2021Sunday, March 7, 20212021‑W09
American Sunday, February 21, 2021Saturday, February 27, 2021-
2022 European Monday, February 28, 2022Sunday, March 6, 20222022‑W09
American Sunday, February 20, 2022Saturday, February 26, 2022-
2023 European Monday, February 27, 2023Sunday, March 5, 20232023‑W09
American Sunday, February 26, 2023Saturday, March 4, 2023-
2024 European Monday, February 26, 2024Sunday, March 3, 20242024‑W09
American Sunday, February 25, 2024Saturday, March 2, 2024-
2025 European Monday, February 24, 2025Sunday, March 2, 20252025‑W09
American Sunday, February 23, 2025Saturday, March 1, 2025-

Determine Week 9 or other calendar weeks in the calculator

In the Calendar Week Calculator, the entry for the European ISO calendar Week 9 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 January 24, 2022

The pages of the "Week Numbers" category were last editorially reviewed by Michael Mühl on January 24, 2022. They all correspond to the current status.

Previous changes on June 25, 2021