What day of the week was 15th August 1947?

easy Q12 of 15

Reasoning Ability - Calendar Problems

AThursday

BFriday

CSaturday

DSunday

Step-by-Step Solution

Step 1: Use Zeller (month > 2 so no year change)
q = 15, m = 8, year = 1947.
Step 2: Compute K and J
K = 1947 % 100 = 47, J = floor(1947/100) = 19.
Step 3: Evaluate components
floor(13*(m+1)/5) = floor(13*9/5) = 23;
floor(K/4)=floor(47/4)=11;
floor(J/4)=4;
5J=95.
Sum: h = (15 + 23 + 47 + 11 + 4 + 95) = 195 → 195 mod 7 = 6.
Step 4: Map to weekday
Zeller mapping: 6 → Friday. So 15 Aug 1947 = Friday.
Final Answer:
Friday → Option B
Quick Check:
Historical calendars confirm 15-Aug-1947 was Friday ✅

Quick Trick: Cross-check Zeller with an odd-day count or known historical anchor if unsure.

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