Windows 10 features a new design for its clock application in the system tray. The new design has a touch friendly interface with bigger numbers and more spacing between them. I happen to agree that it is a good-looking design and more convenient for the user who use the touchscreen. However, in the old design, the users had the option to add two additional clocks for other time zones. It is no wonder that many users miss this feature and want to revert to the old clock. Here is a good news. You can revert to the old clock style and have three clocks, one for your local time zone and two for international time zones of your choice. Here is a registry hack you can use to do so.
Note: This tutorial does not work for Windows 10 insider preview build 14291 and later. You need to sign in as an administrator to be able to change these settings.
Hold the Windows Key and Press R. Type regedit in the Run dialog and press Enter.
Windows registry editor will open. Navigate to the following registry key.
Create a new DWORD (32-bit) Value named UseWin32TrayClockExperience and change its value data.
1 = Enabled Old Clock
0 = Return to Windows 10 Clock (Default)
Once the new key has been created, reboot your system. After the system has rebooted, your Windows 10 will revert to the Windows 7 style calendar.
To add additional clocks, click the time in the system tray and click Change date and time settings, and then click Additional Clocks tab.
Here is an additional tip for the users of old clock. Click on the time in the system tray and click on the month and year text, for example, “March 2016.” Your calendar will change from date view to the month view. Clicking on it again will change the month view to year view. Try this and you will know what I mean.