Japanese phrase
___の有効期限はいつですか？ ___ no yū kō ki gen wa i tsu de su ka
Meaning
When does ___ expire?
When to use it
Asks when something will no longer be valid. It is a polite question often used when checking travel documents or other time limited items.
Example dialogue
パスポートの有効期限はいつですか？ pa su pō to no yū kō ki gen wa i tsu de su ka
When does the passport expire?
来年の三月です。 rai nen no san gatsu de su
It expires next March.