Set A - UPSC Prelims 2025 Solutions

QQuestion

Consider the following statements : I. Anadyr in Siberia and Nome in Alaska are a few kilometers from each other, but when people are waking up and getting set for breakfast in these cities, it would be different days. II. When it is Monday in Anadyr, it is Tuesday in Nome. Which of the statements given above is/are correct?

OOptions

A) I only

B) II only

C) Both I and II

D) Neither I nor II

✓Correct Answer

A) I only

DDalvoy Solutions

Only Statement I is correct:

I. Anadyr and Nome are close but experience different days: Correct. Anadyr (Russia) and Nome (Alaska, USA) are geographically close across the Bering Strait but are separated by the International Date Line, so they can indeed be on different calendar days.

II. When it is Monday in Anadyr, it is Tuesday in Nome: Incorrect. When it is Monday in Anadyr (which is ahead in time), it would actually be Sunday in Nome, not Tuesday. Nome is behind Anadyr in terms of calendar dates due to crossing the International Date Line westward.

The International Date Line creates this unique situation where nearby locations experience different calendar days, but the directional relationship in Statement II is reversed.

Solution Diagram for Q<built-in function id>

SUPSC Prelims Strategy and Tips

For International Date Line questions, remember that crossing westward (from America to Asia) advances the calendar by one day, while crossing eastward (from Asia to America) goes back one day.

SUPSC Prelims 2025 Syllabus Analysis

Geography - International Date Line and time zone concepts

AUPSC Prelims 2025 Question Analysis

Medium to Hard difficulty - requires understanding of International Date Line effects and directional relationships

Question 77

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