Katya of Moscow send me this Comparative View Postcard of the Eastern Hemisphere.
The Map Postcard depicting the comparative size of various mainland, such as Madagascar, Borneo, Sumatra, Java and etc.
Mediterranean Sea, Caspian Sea , Bearing Sea, East & South China Sea, and Arabian Sea are located at Eastern Hemisphere.
Further reading in World Atlas : A great circle divides the Earth into the Eastern and Western Hemispheres and is referenced by two Meridians.
The Prime Meridian is the line of longitude at which longitude is defined to be 0°.
All countries located to the east of the Prime Meridian (0° longitude) are in the Eastern Hemisphere, while countries located to the west is called as Western Hemisphere. Asia and Australia are the only two continents that are entirely in the Eastern Hemisphere.