hour 시간 / minute 분 / hour hand 시침 / minute hand 분침 / one-half 반 / quarter after 15분 후 / quater to 15분 전

7:15    It's seven fifteen.

          It's fifteen past seven.

          It's a quarter past seven.

          It's fifteen after seven.

          It's fifteen minutes past seven  o'clock.

7:30    It's seven thirty

          It's half past seven.

          It's thirty minutes past seven o'clock.

7:45    It's seven forty-five

          It's fifteen to eight.

          It's fifteen minutes to eight o'clock.

          It's a quarter to eight.

3시 1분전  It's one to three

2시 2분전  It's two to two.

1:30   one thirty / half past one / half after one

2:55   two fifty-five / five to three / five till three

5:15   five fifteen / a quarter past five

10:10  ten ten / ten past ten

9:45   nine forty-five / a quarter to ten

9:50   ten to ten

12am   midnight

12pm   noon

* 시:분으로 말하는거고,

  몇분 지났다할때는 분 past(after) 시

  몇시 몇분전일때는 분 to(till) 시 쓰면 된다네요! :)