天てん長ちょう節せつてんちょうせつMeanings1nounEmperor's Birthday (historical holiday)historical termHistorical 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: 天皇誕生日天てん長ちょう節せつは、戦せん
