The visa rules for countries are usually based on a maximum number of days within a certain period, or a maximum number of continuous days. In a few cases the rule may be
a combination of both.
Breaching immigration visa rules can result in large fines, revocation of visas or potentially the denial of entry into a country. Countries are becoming
stricter on visa breaches, leading to some travellers refusing to travel, at the risk be being denied entry or getting expelled from countries.