They are valid for up to 2 hours after the time issued.

This agreement is valid for another period of 5 years.

Thus no one man's conception is valid for any school.

These rights are valid for a period of either 25 or 30 years.

It is only valid for travel by land, and sea.

A permit costs $10 and is valid for a year.

They are valid for up to 90 days of travel within any six month period.

And everyone's point of view is absolutely valid for them.

But he did not think it was any less valid for that.

Any given measure is valid for only a short period of time, often less than a day.