noun
Emperor's Birthday (historical holiday)
Historical term for the national holiday celebrating the reigning emperor's birthday, observed from 1868 to 1948. Replaced by 天皇誕生日 after 1948.
See also: 天皇誕生日
天長節は、戦前の日本で天皇の誕生日を祝う祝日でした。
Tenchōsetsu was a national holiday in prewar Japan celebrating the Emperor's birthday.