Western Hemisphere

"We're in the Western Hemisphere. Welcome to the New World. Well, it consists of the Americas, and with bits of Europe, Africa, Russia, Oceania, and Antarctica... except for the Aleutian Islands."

--Su Ji-Hoon, Lily's Wish

The Western Hemisphere is a geographical term for the half of the earth which lies west of the prime meridian (which crosses Greenwich, England) and east of the antimeridian. The other half is called the Eastern Hemisphere.