(くじ)

くじ
noun
nine o'clock
time-general
1. nine o'clock
The time at nine hours past midnight or noon.
I arrive at the office at nine o'clock.
The store opens at nine in the morning.
Even though it's nine at night, I'm still working.

九時(くじ) is the standard way to say "nine o'clock." Note that () uses the on'yomi reading, not きゅう, when telling time.

Common patterns

Pronunciation

In telling time, ()じ (not きゅうじ). This matches the pattern where () is used in 九月(くがつ) (September) and 九日(ここのか) uses the native Japanese reading.