December 18, 2022 was a

Sunday

How to solve: December 18, 2022

1. 1
   Century anchor2000s→Tuesday (2)
   Practice →
2. 2
   Divide by 1222 ÷ 12→1
   Practice →
3. 3
   Remainder of 1222 % 12→10
   Practice →
4. 4
   Divide remainder by 410 ÷ 4→2
   Practice →
5. 5
   Year's doomsday(2 + 1 + 10 + 2) % 7→1 → Monday
   Practice →
6. 6
   Month doomsdayDecember→12th
   Practice →
7. 7
   Distance18 − 12→6
   Practice →
8. 8
   Final answer(1 + 6) % 7→0 → Sunday