basics: telling time

Let me explain this concept of telling time.

We use a.m. to talk about the time from 12 at night to 11.59 in the morning

We use p.m. to talk about time from 12 in the afternoon to 11.59 at night

o'clock can only be use when you want to tell a whole hour like 6 o'clock, two o'clock

A quater past to 3 - means 3.15 never include p.m., a.m., or o'clock

add 15 minutes to the whole hour

A quater to 3- means 2.45 same rule applied.

half past 3- means 3.30 same rule applied.

use "past" when you want to tell a minutes after the recent hour, and  "to" minutes before the next hour.

(minutes)past recent hour

(minutes)to next hour.

Use more convenient one.