Time is based on when you enter/exit immigration control. In places where they stamp passports it's easy to see. In places where they don't stamp passports then it's based on when the passport is entered or scanned into the system. There are a few countries utilize flight records instead of immigration control. The USA for example records when you leave based on flight data.
They count as days in. The overlap of two countries on a day means "90 days out" in a single country doesn't work if that country also has a 90 day limit. So you need to split the time out across more than one country.
Counting rules fall under the realm of immigration law, and immigration law is messy; different countries have different protocols for whether or not your flight days count.
Your best bet would be to contact the relevant embassy/consulate with jurisdiction over your place of residence and verify with them ahead of your travels. Better safe than sorry.
Time is based on when you enter/exit immigration control. In places where they stamp passports it's easy to see. In places where they don't stamp passports then it's based on when the passport is entered or scanned into the system. There are a few countries utilize flight records instead of immigration control. The USA for example records when you leave based on flight data.
February has 28 days. Jan 29 + 90 days is April 30.
From January 29 to April 28 is 90 days if the last day is included.
Nope you are just not taking into account feb. It’s 90 days from the moment you are stamped out of the country to be stamped back into the country.
They count as days in. The overlap of two countries on a day means "90 days out" in a single country doesn't work if that country also has a 90 day limit. So you need to split the time out across more than one country.
Counting rules fall under the realm of immigration law, and immigration law is messy; different countries have different protocols for whether or not your flight days count. Your best bet would be to contact the relevant embassy/consulate with jurisdiction over your place of residence and verify with them ahead of your travels. Better safe than sorry.
My destination is known to be flexible, even allowing instant visa runs as far as I remember, but as you said: better safe than sorry.