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प्रश्न
Calculate the longitude of a place where the local time is 6.00 a.m. when the time is 9.00 p.m. at New Delhi on longitude 77° E.
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उत्तर
The time difference between the required place and New Delhi is 6 + 9 = 15 hours, so the time in minutes = 15 × 60 = 900 minutes. So the longitudinal difference is 900/4 = 225°. So the place will be in the west at 225° – 77° = 148° W.
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संबंधित प्रश्न
State the longitudinal value in degrees of Indian Standard Meridian.
Make a detailed study of finding time with the help of longitudes. Give one practical example.
An important programme was to be broadcast from Mumbai at 7.30 p.m. This was heard by some Indian sailors near Ivory Coast in West Africa at 20°W longitude. What was the local time there?
What is “Greenwich Mean Time”?
Give a reason for the following :
All parallel other than equator are not Great Circles.
State two properties of lines of longitude.
What do you mean by “Meridians or Lines of Longitude”?
(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’?
What does the time ‘12 noon’ signify at any place?
Write a note on Longitudes.
