Apart from across the antarctic continent, does the international date line (NOT the 180th line of latitude) pass through any land territory anywhere at all?
No, that is why the international dateline doesn't follow the 180th line of longitde - It wouldn't be workable if different parts of the same country were on different days!
the answer being that part of the Alaskan Aleutian Islands cross the 180 degrees longitude (not the the Int'l date line though) into the Eastern Hemisphere.....