nine o'clock

Definitions

1. The start of the tenth hour of the day; 9:00 a.m. (09:00).
   uncountable
2. The start of the twenty-second hour of the day; 9:00 p.m. (21:00).
   uncountable
3. To the left (horizontal clock orientation) (from the location of the 9 mark on a clock face)
   informal, uncountable

Equivalents

Examples

“The breakfast buffet opens at nine o'clock (= "The breakfast buffet opens at 9:00 a.m.").”

“Supper was served at nine o'clock (= "Supper was served at 9:00 p.m.").”

“We've got a bogey at nine o'clock.”

CEFR level