Telling the time to the half hour or quarter hour
There are 15 minutes in quarter of an hour.
There are 30 minutes in half an hour.
There are 45 minutes in three quarters of an hour.
When it's past the hour (up to 30 minutes past) we say "past".
When it's before the hour (after 30 minutes past) we say "to".
30 minutes is half an hour, we say "half past" or "thirty".
15 minutes is quarter of an hour. At 15 minutes past the hour we say "quarter past" or "fifteen". At fifteen minutes to the hour we say "quarter to" or "forty-five".
There are 24 hours in a day, but only the military, police and computer programmers use the 24-hour clock. When writing or speaking generally we tend to use the 12-hour clock. The 24 hours of the day are divided into two periods called a.m. (Latin "ante meridiem" | English: "before mid day") and p.m. (Latin "post meridiem" | English: "after mid day").
The way people write the time varies. I prefer a.m. and p.m.
Choose from the following styles or use what your English teacher tells you to and stick to it:-
a.m. p.m.
am pm
AM PM
A.M. P.M.
am pm
AM PM
A.M. P.M.
Some people (myself included) use a dot as the separator: 2.30 pm.
Some people use a colon as the separator: 2:30 pm. The colon is usually used with the 24-hour clock: 14:30.
