seven o'clock

Short definition from Wiktionary

Noun

1. 1
   The start of the eighth hour of the day; 7:00 a.m. (07:00).
2. 2
   The start of the twentieth hour of the day; 7:00 p.m. (19:00).
3. 3
   A position behind and slightly to the left (horizontal clock orientation) (from the location of the 7 mark on a clock face)