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With reference to the International Date Line, state the following:

a)Its meaning and application
b) The important deviations it makes and reasons for the same.
c) Give an example of how time lost or gained is compute with reference to this line.

ICSE Class 9 Total Geography Ch 2:Geographic Grid- Latitudes and Longitudes


The International Date Line is the 180° line. When crossing this line from west to east a day is deducted or the time is fixed backward by one day.When crossing this line from east to west, a day is added or the calendar is fixed one day ahead.
To avoid confusion of having different dates within the same country, the Date Line bends and goes Zig Zag at the Bering Strait between Siberia and Alaska and Fiji,Tonga,New Zealand and some other islands
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