From your link: 3. You are a citizen or resident alien of the US whose physical absence from the US constitutes a minimum of 330 days out of any 365. When I l

From your link: 3. You are a citizen or resident alien of the US whose physical absence from the US constitutes a minimum of 330 days out of any 365. When I lived overseas I knew US citizens counted the number of days they spent visiting family to make sure they stayed under 30 days each year.