Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · LongitudeMedium · 45s
If an island lies along the 180° longitude, it:
TopicLongitude
Question Typemultiple choice
DifficultyMedium
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Explanation:Crossing IDL → calendar day changes → possible two dates.
Final Answer: Option B - Must have two calendar days simultaneously