definitions - Whats the difference between 今日 and 本日? - Japanese . . . 20 本日 is keigo You will hear this on a train or airplane, or in a store But you won't be saying it yourself, unless if you as a beginning student are put in the unlikely position of making an official announcement to someone 今日 is what you would use in ordinary situations
本日 - Wiktionary, the free dictionary ^ Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tokyo: Sanseidō, →ISBN ^ NHK Broadcasting Culture Research Institute, editor (1998), NHK日本語発音アクセント辞典 [NHK Japanese Pronunciation Accent Dictionary] (in Japanese), Tokyo: NHK Publishing, Inc , →ISBN ^ Kindaichi, Kyōsuke et al , editors (1997), 新明解国語辞典 [Shin Meikai
本日 - Jisho. org へや 部屋 を たず 訪ねた ところ、秘書に「先生は ほんじつ 本日 から出張で、 おおさか 大阪 へいらっしゃっています。 」と言われた。 When I visited the professor’s office to take care of some business, her secretary told me, “She is in Osaka on a business trip starting today ” — Jreibun