Statement (A): Time interval atthe dateline is 12 hours from theGreenwich.Reason (R): Dateline is situatedat 180º meridian.Using following options choose thecorrect answer. [UPPCS (Pre) 1992](A) (A), (R) both are correct and(R) is the correct explanation of(A)(B) (A) and (R) both are correct,but (R) is not the correctexplanation of (A)(C) (A) is correct, but (R) is false(D) (R) is correct, but (A) is false
Question
Statement (A): Time interval atthe dateline is 12 hours from theGreenwich.Reason (R): Dateline is situatedat 180º meridian.Using following options choose thecorrect answer. UPPCS (Pre) 1992 (A), (R) both are correct and(R) is the correct explanation of(A)(B) (A) and (R) both are correct,but (R) is not the correctexplanation of (A)(C) (A) is correct, but (R) is false(D) (R) is correct, but (A) is false
Solution
The correct answer is (A) (A), (R) both are correct and (R) is the correct explanation of (A).
Here's why:
Statement (A) is correct. The International Date Line is located halfway around the world from the prime meridian (0° longitude) or about 180° east (or west) of Greenwich, London, UK, the reference point of time zones. This is the place where the day officially changes. When you cross the date line, you become a time traveler of sorts! If you cross from the west side to the east side, you subtract a day, and if you cross from the east side to the west side, you add a day.
Reason (R) is also correct. The International Date Line is indeed located at the 180º meridian. The line deviates from the meridian in several places to avoid dividing countries in half.
And (R) is the correct explanation of (A). The reason the time difference exists is because of the location of the International Date Line at the 180º meridian.
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