Te wa

For the past few days we were learning how to transfer analogue time to 24 hour time. It changes to 24 hour times at midday 4 in the morning will be 0400 and in the afternoon it will be 1600  I got a tricky question I solved it but we had a little debate my teacher got tricked but I was right the easy part was already knowing how to tell the time the hard part was knowing how to transfer it to 24 hour time.