– The following shows time in both the 24 and 12-hour clock.

– We add 12 hours to the 12-hour clock time in p.m. to change it to a 24-hour clock time and subtract 12 hours from 24 hour clock time to change it to the 12-hour clock time in p.m.
1.33 p.m. > 1333
1547 > 3.47 p.m.