November 9, 1989 was a

Thursday

How to solve: November 9, 1989

1. 1
   Century anchor1900s→Wednesday (3)
   Practice →
2. 2
   Divide by 1289 ÷ 12→7
   Practice →
3. 3
   Remainder of 1289 % 12→5
   Practice →
4. 4
   Divide remainder by 45 ÷ 4→1
   Practice →
5. 5
   Year's doomsday(3 + 7 + 5 + 1) % 7→2 → Tuesday
   Practice →
6. 6
   Month doomsdayNovember→7th
   Practice →
7. 7
   Distance9 − 7→2
   Practice →
8. 8
   Final answer(2 + 2) % 7→4 → Thursday