Windows 10 experiments with new calendar UI that shows graphics and events while the end of support date nears.

Although Windows 11/10 shows a 24-hour lock format on the lock screen, you can change it to a 12-hour format using this step-by-step tutorial. It is possible to change the lock screen clock format ...

This practice involves advancing the clocks by one hour during the warmer months and reverting to Standard Time in the fall.