April 15, 1912 was a

Monday

How to solve: April 15, 1912

1. 1
   Century anchor1900s→Wednesday (3)
   Practice →
2. 2
   Divide by 1212 ÷ 12→1
   Practice →
3. 3
   Remainder of 1212 % 12→0
   Practice →
4. 4
   Divide remainder by 40 ÷ 4→0
   Practice →
5. 5
   Year's doomsday(3 + 1 + 0 + 0) % 7→4 → Thursday
   Practice →
6. 6
   Month doomsdayApril→4th
   Practice →
7. 7
   Distance15 − 4→11
   Practice →
8. 8
   Final answer(4 + 11) % 7→1 → Monday