Converting time

When converting 24 and 12 hour time,

It's really different you got to know that 24 hour time uses pm and am unlike 12 hour time it's 100 hours at 1 in the morning.https://open.spotify.com/user/kai.bal/playlist/5A4CyQM8RrX8Qihft8hFFp

When converting 24 and 12 hour time you got to get a 12 hour time like 1:00 pm and then you get the 1 and add ten to it and then pluse 2 to the 1 witch would make it 13:00 hours and then you do reverse to get a 12 hour time.