Display the taskbar clock on multiple screens in Windows?

Solution 1:

Windows 10 Anniversary Update (version 1607, build 14393.10) was pushed to standard update channels on August 2 2016, and now there is no longer any need to install third party software to use dual monitor taskbar clocks.

This screenshot of a dual-monitor setup shows the clock on both the left and the right monitor taskbars outlined in red. No additional configuration is required (other than allowing the install of the update).

Solution 2:

You can't display the clock on both taskbar. It is possible to drag your primary taskbar to the second monitor providing they are unlocked first.