The taskbar in Windows 11, although it looks identical to the one in Windows 10, it has been developed from scratch. Because of this reason, it lacks many of the classic features present in the earlier versions of the Windows operating system.
One of the many missing features is the date and clock on the secondary display. That is, when you have attached more than one monitor to your Windows 11 PC and using the second display as the extended display, the taskbar on the second display does not display the date and clock. This is an evident omission, and many users are not happy with it.
The team behind Windows 11 might add the ability to display the date and clock on all monitors in a future Windows 11 release, but for now, there is no option to display the date and clock on display other than the primary one.
Luckily, a developer has come up with a workaround software that adds date and clock to the taskbar on all screens.
ElevenClock: Show date & clock on additional displays in Windows 11
ElevenClock is a free utility designed to display the date and clock on the taskbar of all displays. The utility makes showing the date and clock on all monitors an easy task.
Like the built-in date and clock, the ElevenClock supports all system locals and time formats and shows the date and time on all displays except the primary one (the built-in date & clock shows up on the primary display).
Additionally, you can use the ElevenClock even if you use the dark mode as it supports both light and dark modes. And just like the date and clock on the primary display, the ElevenClock also shows/hides notifications and calendar panel upon clicking on it.
So, ElevenClock is a must have program if you have a multi-monitor setup running Windows 11. You can grab it from the link given below. All you need to do is download, install, and run the program. There are plenty of settings and options to fiddle with as well!
Edge might warn you when you download ElevenClock on your PC. You can safely ignore the warning and run the program.