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प्रश्न
Give a reason for the following :
When it is noon at Cairo (30°E), the local time in New York (75°W) is 5.00 a.m.
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उत्तर
| New York | Greenwich | Cairo |
| 75° W | 0° | 30°E |
| ? | 12.00 |
Longitude of Cairo = 30° E
Longitude of New York = 75° W
Difference in Longitude = 30° + 75° = 105°
(Add because Cairo is in the East of Greenwich and New York is in the West of Greenwich).
∴ Difference in time = 105 × 4 = 420 minutes = 7 hours
As New York is situated in the West of Greenwich, its local time will be behind that of Cairo. So we subtract.
| Hours | Minutes | |
| Local time at Cairo = | 12 | 0 |
| Subtract = | 7 | 00 |
| Local time at New York = | 5 | 00 (a.m.) |
संबंधित प्रश्न
State the longitudinal value in degrees of Indian Standard Meridian.
Give a reason the greenwich time is called Greenwich Mean Time.
State the use of the lines of longitude in relation to distance and time.
What is the difference between Prime Meridian and other meridians of longitude?
Give a reason for the following :
All parallel other than equator are not Great Circles.
Tick the correct answer.
The total number of longitudes are
From the westernmost point to the easternmost point, the local times of India extend over a time difference of ______.
True or False.
The time at a place in the east of Greenwich is ahead of that in Greenwich.
The area found between 0° and 180° E lines of longitude is called.
How many times would the sun pass overhead a line of longitude?
