Japanese phrase
___は何日ですか？ ___ wa nan nichi de su ka
Meaning
How many days does ___ last?
When to use it
Asks how many days something lasts. This polite question commonly concerns trips, stays, or events.
Example dialogue
旅行は何日ですか？ ryo kō wa nan nichi de su ka
How many days does the trip last?
5日です。 5 ka de su
Five days.