7:15 ( or a quarter after/past seven)
3:15 ( or three fifteen)
3:45 ( or three forty five)
7:30 (or half past seven)
three o'clock
in the morning (Latin Ante Meridiem - between midnight and noon)
6:45 (or fifteen to seven)
3:30 (or three thirty)
in the afternoon - in the evening - at night (Latin post meridiem - between noon and midnight)
6:15 ( or fifteen after/past six)
5:45 ( or a quarter to six)
