If you found any issue with how to add the date to the taskbar in windows 7, Please take the step below:
1. You need to right-click on the Window's taskbar and select "Properties" from the resulting menu.
2. After that click the check box next to "Use Small Icons" to disable the option. The icons will get somewhat larger and the date will appear under the time.
3. In last, Click "Apply" followed by "Ok" to save your changes and exits the window.
If you found any issue, please comment below.