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October 25, 1881 was a
Tuesday

How to solve: October 25, 1881

  1. 1
    Century anchor1800s→Friday (5)
    Practice →
  2. 2
    Divide by 1281 ÷ 12→6
    Practice →
  3. 3
    Remainder of 1281 % 12→9
    Practice →
  4. 4
    Divide remainder by 49 ÷ 4→2
    Practice →
  5. 5
    Year's doomsday(5 + 6 + 9 + 2) % 7→1 → Monday
    Practice →
  6. 6
    Month doomsdayOctober→10th
    Practice →
  7. 7
    Distance25 − 10→15
    Practice →
  8. 8
    Final answer(1 + 15) % 7→2 → Tuesday
Practice the Doomsday algorithm →