October 31, 2025 was a

Friday

How to solve: October 31, 2025

1. 1
   Century anchor2000s→Tuesday (2)
   Practice →
2. 2
   Divide by 1225 ÷ 12→2
   Practice →
3. 3
   Remainder of 1225 % 12→1
   Practice →
4. 4
   Divide remainder by 41 ÷ 4→0
   Practice →
5. 5
   Year's doomsday(2 + 2 + 1 + 0) % 7→5 → Friday
   Practice →
6. 6
   Month doomsdayOctober→10th
   Practice →
7. 7
   Distance31 − 10→21
   Practice →
8. 8
   Final answer(5 + 21) % 7→5 → Friday