Longitude


 * Meridians of Longitude ** are the lines that run North to South down the map. They are not parallel lines, but meet at the North and South Poles. There are **two main lines** of Longitude:

The Prime Meridian also called Greenwich Meridian at 0° The International Date Line at about 180° in the Pacific Ocean

Longitude effects **TIME**

The Greenwich Meridian separates the Eastern Hemisphere from the Western Hemisphere.

Meridian refers to the middle of the day, Noon, when the sun is directly overhead. All places on the same meridian experience noon at the same time!