Galaxy Watch 5: I can't find setting for 24-hour time.

[JRobGrave]

Wearable doesn't have a setting in Watch Manager to use 24-hour time instead of 12-hour.

[GaryB82]

You would need set your phone to Military time since the watch and phone are synced 

[LongHiker]

@JRobGrave Like @GaryB82 said, it mimics your phone. Also be aware that some watch faces don't support 24 hour time so will always appear in 12 hour format.