January 1, 1863 was a

Thursday

How to solve: January 1, 1863

1. 1
   Century anchor1800s→Friday (5)
   Practice →
2. 2
   Divide by 1263 ÷ 12→5
   Practice →
3. 3
   Remainder of 1263 % 12→3
   Practice →
4. 4
   Divide remainder by 43 ÷ 4→0
   Practice →
5. 5
   Year's doomsday(5 + 5 + 3 + 0) % 7→6 → Saturday
   Practice →
6. 6
   Month doomsdayJanuary→3rd
   Practice →
7. 7
   Distance1 − 3→-2
   Practice →
8. 8
   Final answer(6 + -2) % 7→4 → Thursday