Real Time Clock by Xilef11

Real Time Clock displays the system time on the HUD.

Things like the position, size, color and 12/24 hour clock format are configurable.

The clock display can be toggled with a keybinding (‘c’ by default)

Useful if you play in full screen and want to check the time without looking at a phone/watch/clock.

Forum post

Resource

http://minecraft.curseforge.com/projects/real-time-clock

License