Meridian Longitude

antimeridian, the Prime Meridian divides the Earth into the . Measurement : Longitude is measured in degrees ( ∘raised to the composed with power ), minutes ( ), and seconds ( 180∘180 raised to the composed with power East (positive values) and 180∘180 raised to the composed with power West (negative values). Physical and Geometric Characteristics

The Earth rotates 360 degrees in approximately 24 hours. By dividing 360 by 24, we find that the Earth rotates . This relationship is why meridians are the foundation of our time zones. meridian longitude