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The International Date Line is an imaginary line near the 180° meridian where calendar dates shift, ensuring global time synchronization and simplicity in travel and communication. For a detailed description, click on the article title.
A set of imaginary lines go around the earth over the poles, dividing it east and west. The prime meridian is labeled the zero-degree line for longitude.
A measurement that denotes a position east or west of the prime meridian (Greenwich, England).
The imaginary line at zero meridians is used to measure longitude east to west and divide the earth’s east and west halves.