sentence1: `` What does it mean when someone says '' `` two o'clock '' '' , or '' `` seven o'clock '' '' in order to show a particular direction without pointing it out ? How does this system work ? ''
sentence2: How do people say it 's 00:00 o'clock as opposed to saying 12:00 AM ? Do people also say `` thirteen , fourteen etc. o'clock '' as well ?