What time did wartime naval reports use?

Did Second World War naval action reports use local time or universal time?

They usually used the local time zone of the action.

Second World War naval reporting normally used the time zone in which the action occurred. A report's clock therefore followed the locality of the battle rather than automatically using the time at the office receiving it. This convention can make simultaneous accounts appear inconsistent when their authors worked in different zones. It is a useful caution when comparing naval records with shore headquarters or forces operating elsewhere.