I guess I should remember this but...

When you leave the states to fly to Asia on Monday 1st, and the schedule is to fly 19 hours +1 day, does that mean when you arrive its Tuesday the 2nd, or is it still Monday, just much later in the evening?

For some reason, I cannot recall how this works, but this question should be a routine pop-fly to the second baseman-type question to just about anyone (ok, so just call me Chuck Knoblach!) Help!