How many days (and each day before expiration) before the password is due to expire should the user be informed?

在密码到期之前，应该提前几天通知用户(到期之前每天都通知)？

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Password expiration (mandatory, default: 180 days)

Password expiration （任意，缺省：180 天）

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Mayonnaise: Unopened, refrigerated Kraft mayonnaise can be kept for 30 days after its expiration date or 3-4 months after opening, the company told ShelfLifeAdvice.

蛋黄酱：卡夫公司称它们生产的蛋黄酱在未开封的情况下可以保存至保质期后30天，开封 后仍可以保存3-4个月。

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Days before the expiration of a four-year term as Fed chief, Bernanke faces growing opposition from Democratic and Republican senators who will vote on his reconfirmation.

VOA: standard.2010.01.24

This is an April position, which you can see is 59 calendar days until expiration.

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That 32 is how many calendar days to expiration, you can see that you have a lot of movement in a short amount of time.

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Trading in Timberland options today is relatively calm, but investors who purchased calls on the boot maker back in May are now holding contracts that have sky-rocketed in value just days ahead of expiration.

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