1. Meaning and Uses of Latitude
  2. Latitude and Distance
  3. Meaning and Uses of Longitude
  4. The Great Circle
  5. Differences and Similarities between Lines of Latitude and Longitude
  6. Time and Time Zones
  7. Standard Time and World Time Zones
  8. International Dateline and Grid References


Lines of Latitude

Meaning of Latitude

Latitude is an imaginary line drawn on the globe running from west to east. It is the angular distance of a point on the earth’s surface, measured in degrees from the centre of the earth. The earth is divided into equal halves – the northern and southern hemisphere by latitude (O0) called the equator. Other lines of latitude are parallel to the equator and to each other, hence, the latitude are also called parallels of latitude.Lines of Latitude

Lines of Latitude run from west to east

The major lines of latitude are:

  1. The Equator (0°)
  2. The Tropic of Cancer 23 ½°N
  3. The Tropic of Capricorn 23 ½°S
  4. The Arctic Circle 66 ½°N
  5. The Antarctic Circle 66 ½°S

These are diagrammatically shown below:

Parallels of Latitude


Equator is a line of latitude that divides the earth into two halves- northern hemisphere and southern hemisphere.

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