Have a nice/good day!：”ī ichinichi wo” Japanese Phrase #284

Yuka

Want to wish someone a nice day in Japanese? いい一日を is the natural phrase — but there’s more to it than you might expect!

Breaking Down the Phrase

The phrase いい一日を is short for いい一日をお過ごしください — “Please have a good day.” In casual use, the お過ごしください is dropped, and just いい一日を works perfectly:

• いい一日を！ — Have a great day! (casual parting)

You can also say: 良い一日を (yoi ichinichi wo) — same meaning, slightly more formal.

When to Use It

Use いい一日を when parting from someone in the morning or daytime — similar to “have a good day!” in English:

• A: じゃあ、行ってきます！ — Well, I’m heading out!
• B: いい一日を！ — Have a great day!
• —
• A: お疲れ様でした。 — Good work today.
• B: ありがとう。良い一日を。 — Thank you. Have a good rest of your day.

Rei

What about in the evening? Can I still use it?

Yuka

For evenings, use いい夜を (ii yoru wo) — “have a good evening!”

Similar Parting Phrases

Quick Quiz

It’s Friday afternoon and your coworker is heading home. What do you say?

Answer: よい週末を！ (Have a good weekend!) or いい一日を！

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