Before revision: 300px|The division of Earth by the Equator and the prime meridian 300x300px|Map roughly depicting the Eastern and Western hemispheres In geography and cartography, hemispheres of Earth are any division of the globe into two equal halves (hemispheres), typically divided into northern and southern halves by the equator or into western and eastern halves by an imaginary line passing through the poles 1 .
After revision: 300px|The division of Earth by the Equator and the prime meridian 300x300px|Map roughly depicting the Eastern and Western hemispheres In geography and cartography, hemispheres of Earth are any division of the globe into two equal halves (hemispheres), typically divided into northern and southern halves by the equator or into western and eastern halves by an imaginary line passing through the poles .