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प्रश्न
(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’?
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उत्तर
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.
संबंधित प्रश्न
A cricket match was to be held at Birmingham at 9 a.m. local time. The position of Birmingham is 5° W. Calculate the time the viewers have to tune their television in Sydney 151°E.
Calculate the location of a place where the local time is noon when it is 7.30 p.m. at Greenwich.
Name the two hemispheres of the Earth made by the equator?
What is the rate of change of time per degree of longitude?
Explain how the longitude of a place affects the time.
Why do some countries have many time zones?
OR
What are ‘Time Zones’?
Give a reason for the following :
Local time is a theoretical reality, while Standard Time is a practical necessity.
What adjustment has to be made when ships cross the International Date Line?
OR
Explain why a day appears to be lost in sailing round the world from east to west and gained when travelling from west to east.
True or False.
The time at a place in the east of Greenwich is ahead of that in Greenwich.
The network of lines of latitude and longitude.
