Question
While crossing the IDL, what changes will you make?

Answer

  • When you cross the 180° meridian, some precautions need to be taken.
  • There is a difference of 12 hours from Prime Meridian, if you go from East or West.
  • According to the convention, the start (and end) of a date is considered to be at 180° Meridian.
  • Accordingly, an adjustment or change in day and time is made. Thus, while travelling from east to west of IDL , a day is added whereas while travelling from west to east of IDL, the day remains the same.

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