Let the time bar in the lower right corner of the Win7 system display the day of the week

Click again Change date and time";

Click "Change date and time"

and then click "Change calendar settings";

Change calendar Settings

In the Custom Format window, switch to the "Date" tab and change the date format bar as follows: Enter "dddd dd MMM" in the Short Date (S) drop-down box.

Custom Date Format

Windows uses a short date by default; of course, you can also change the format of the long date, in the long date drop-down box. Enter "dddd, MMMM dd, yyyy". Finally, step by step and click "OK" to exit.

This operation also applies to other versions of Windows. In fact, even if you don't make changes in Win7, it is very convenient to check the week. There is a desktop calendar widget. Secondly, the mouse can be docked at the time to view the date and week.