Continents Entirely in the Western Hemisphere

Only two continents lie completely within the Western Hemisphere (west of the Prime Meridian and east of the 180th meridian):

• North America – Extends from the Arctic Circle to the Isthmus of Panama.
• South America – Extends from the Caribbean coast to Cape Horn.

All other continents (Europe, Africa, Asia, Australia, Antarctica) cross the Prime Meridian or 180th meridian, placing parts in both Eastern and Western Hemispheres.