九月

1. Origins, structure, and basic meaning

• Structure: 九月 is read as くがつ and means “September”.
• Basic usage: It marks plans entered for September and a birthday occurring in that month.

2. Common pitfalls and similar expressions

• 九月の予定 / 誕生日は九月
  • Use 九月の予定 before a noun and 誕生日は九月 predicatively. The reading is くがつ.