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
Q₉. If it is 5:30 AM IST, what is the time at Greenwich?
TopicLongitude
Question Typemultiple choice
DifficultyMedium
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained — no skipped algebra.
Explanation:IST is +5.5 hrs ahead of GMT → subtract 5.5 hrs → 12:00 AM.
Final Answer: Option A — 12:30 AM