3.00 a.m.	three o'clock in the morning
3.00 p.m.	three o'clock in the afternoon
1. 3.15	quarter past three
2. 3.15	three fifteen
3.30	half past three
3.20	twenty minutes past three
3.45	quarter to four
12.00 at the day	twelve o'clock , midday
12.00 at night	twelve o'clock , midnight