eight o'clock

eight o'clock

1. (In both the 12-hour clock and the 24-hour clock) The start of the ninth hour of the day; 8:00 a.m. (08:00).

   The breakfast buffet opens at eight o'clock (= "The breakfast buffet opens at 8:00 a.m.").

2. (Only in the 12-hour clock) The start of the twenty-first hour of the day; 8:00 p.m. (20:00).

   Supper was served at eight o'clock (= "Supper was served at 8:00 p.m.").

3. (informal) A position to the left and behind (horizontal clock orientation) (from the location of the 8 mark on a clock face)

   We've got a bogey at eight o'clock.