How do you write 24 hour clock?

Answer 1

If it 2 o'clock you add 2 to make four then you add a 1 in front of the four to make 14 then you add o'clock as well so it makes 14 o'clockwhich is 2 o'clock but if it say's 19 o'clock you have to do the opposite by taking away 2 and by taking away 1 which should end up as 7 o'clock or 7:00.