九時

1. Origins, structure, and basic meaning

• Structure: 九時 is read as くじ and is a time expression meaning nine o'clock.
• Basic usage: Mark an event time with 九時に始まる and a deadline with 九時までに会う.

2. Common pitfalls and similar expressions

• Reading
  • Although 九 can be read as きゅう elsewhere, the established reading of 九時 here is くじ.
• に and までに
  • に marks the starting time, while までに requires the meeting to occur no later than that time.