Is there a 12 o clock midnight?

YES!!!

On the analogue clock, which is constructed to show the time for 12 hours.

So for Midnight , the analogue clock will show ' 12 o'clock ( hours of the clock).

The two hands/fingers will both be pointing at exactly '12' on the dial/face of the clock.

On the '24' hour clock, the digital number will read either ' 2400' or ' 0000 '

This time is NEVER used by airplanes, trains, military etc/. because , which day/date do we means.

The latest time on the 24 hour clock is ' 2359' and the earliest is '0001'.