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Question
(a) What is the rule of changing the date while crossing the international date line?
(b) What is meant by ‘six-day week’ and ‘eight-day week’?
Solution
Rule: On crossing the date line, the ships adjust the dates according to the following rules :
(a) When crossing westward, towards Asia (from U.S.A. to Japan), a day must be added.
When crossing the date line, ship misses a day from the calendar and have ‘six day week’. If a ship crosses the date line on Monday, the next day will be Wednesday and not Tuesday.
(b) When crossing eastward towards America (from Japan to the U.S.A.) a day must be subtracted. When crossing the date line ships gain a day from the calendar and have an ‘eight-day week’. It repeats a day. If a ship crosses the date line on Monday, the next day will be again Monday and not Tuesday.
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