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When it is 4 pm, Sunday at Greenwich, what is the time and day at a place, 142 ½° E latitude?
- a)9:30 PM, Sunday
- b)12 AM, Monday
- c)6:30 AM, Sunday
- d)1:30 AM, Monday
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
When it is 4 pm, Sunday at Greenwich, what is the time and day at a pl...
The earth rotates 360° in about 24 hours, which means 15° an hour or 1° in four minutes. Thus, when it is 12 noon at Greenwich, the time at 15° east of Greenwich will be 15 x 4 = 60 minutes, i.e., 1 hour ahead of Greenwich time, which means 1 p.m. Similarly the time gap between Greenwich and 142 ½° latitude is 9 hours and 30 minutes. When it is 4 pm at Greenwich, the time at 142 ½° latitude will be 1:30 am next day i.e Monday.
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When it is 4 pm, Sunday at Greenwich, what is the time and day at a pl...
Explanation:
Conversion of Time Zones:
To determine the time and day at a place with a different longitude, we need to consider the rotation of the Earth and the difference in time zones.
Greenwich Mean Time (GMT):
Greenwich Mean Time (GMT) is the standard time at the Prime Meridian (0 degrees longitude) in Greenwich, London. When it is 4 pm at Greenwich, it means it is 4 pm GMT.
142 E Longitude:
142 E longitude is 142 degrees east of the Prime Meridian. Since the Earth rotates 360 degrees in 24 hours, each degree represents 4 minutes (24 hours / 360 degrees = 4 minutes per degree).
Calculating the Time Difference:
To calculate the time difference between Greenwich and 142 E longitude:
142 degrees * 4 minutes = 568 minutes
568 minutes = 9 hours and 28 minutes
So, the time difference is 9 hours and 28 minutes ahead of GMT.
Time Calculation:
Adding 9 hours and 28 minutes to 4 pm GMT:
4 pm + 9 hours = 1 am
1 am + 28 minutes = 1:28 am
Therefore, when it is 4 pm on Sunday at Greenwich, it will be 1:28 am on Monday at a place located at 142 E longitude. Hence, the correct answer is option 'D' - 1:30 am, Monday.
Conversion of Time Zones:
To determine the time and day at a place with a different longitude, we need to consider the rotation of the Earth and the difference in time zones.
Greenwich Mean Time (GMT):
Greenwich Mean Time (GMT) is the standard time at the Prime Meridian (0 degrees longitude) in Greenwich, London. When it is 4 pm at Greenwich, it means it is 4 pm GMT.
142 E Longitude:
142 E longitude is 142 degrees east of the Prime Meridian. Since the Earth rotates 360 degrees in 24 hours, each degree represents 4 minutes (24 hours / 360 degrees = 4 minutes per degree).
Calculating the Time Difference:
To calculate the time difference between Greenwich and 142 E longitude:
142 degrees * 4 minutes = 568 minutes
568 minutes = 9 hours and 28 minutes
So, the time difference is 9 hours and 28 minutes ahead of GMT.
Time Calculation:
Adding 9 hours and 28 minutes to 4 pm GMT:
4 pm + 9 hours = 1 am
1 am + 28 minutes = 1:28 am
Therefore, when it is 4 pm on Sunday at Greenwich, it will be 1:28 am on Monday at a place located at 142 E longitude. Hence, the correct answer is option 'D' - 1:30 am, Monday.
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When it is 4 pm, Sunday at Greenwich, what is the time and day at a place, 142 ½°E latitude?a)9:30 PM, Sundayb)12 AM, Mondayc)6:30 AM, Sundayd)1:30 AM, MondayCorrect answer is option 'D'. Can you explain this answer?
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