The color of the ocean in the atlas is blue, green means land, yellow plateau.
Latitude and Longitude in an atlas
Latitude:
Parallels of latitude are imaginary lines drawn around the Earth from east to west.
Longitude:
Lines of longitude are imaginary lines that run in a north-south direction from the North Pole to the South Pole.
Here are the pictures:
Longitude:
Latitude:
World time zones
The Earth s divided into 24 time zines based in each 15° of longitude. When the sun is directly over the Prime Meridian (longitude 0°), the time is 12 noon (GMT) Greenwich Mean Time.International Date Line
The International Date Line is the line longitude at 180°.
Map Projections