13:00 It's one o'clock
16:15 It's a quarter past four
14:30 It's hafl past two
00:45 It's a quarter to one
13.00 - It's one p.m. / It's one o'clock.
16.15 - It's four fifteen p.m. / It's a quarter past four.
14.30 - It's two thirty p.m. / It's half past two.
00.45 - It's twelve forty- five a.m. / It's a quarter to one.
