The validity period of a visa is a very important part of a visa. Visas issued by all sovereign countries in the world basically indicate the period of validity. That is to say, there is no visa without a valid period.

The validity period of the visa means that the visa is valid for a certain period of time, beyond which the visa is invalid.

The period of stay of a visa refers to the period of time that the visa holder is allowed to stay in the country (region).