Most Populous Islands In The Western Hemisphere

Oh, you are talking about the definition of Western Hemisphere? Mirriam-Webster definition is vague: "the half of the earth comprising North and South America and surrounding waters," It says nothing about where to divide the earth in half. If we want to keep all of Europe together by moving the line westward, then New Zealand automatically becomes part of the western hemisphere. National Geographic offers both possibilities, so it really doesn't disagree with me.Years ago, the geocentric English chose Greenwich Observatory for the prime meridian and all our longitudes are measured from there. I'm sticking with that definition.