Calendar Weeks

This week is Calendar Week 40

10/4/2021 - 10/10/2021
Calendar Week 2021 |

When is the 40th week number 2021?

Calendar Week (week number) 40 is from Monday, October 4, 2021
until (and including) Sunday, October 10, 2021.

What's the Current Week Number?

The current week (week 40) is highlighted.

Find more info on our main Calendar 2021 with Week Numberss page.

The highest week number in a year is either 52 or 53.