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February 9, 2026 was a
Monday

How to solve: February 9, 2026

  1. 1
    Century anchor2000s→Tuesday (2)
    Practice →
  2. 2
    Divide by 1226 ÷ 12→2
    Practice →
  3. 3
    Remainder of 1226 % 12→2
    Practice →
  4. 4
    Divide remainder by 42 ÷ 4→0
    Practice →
  5. 5
    Year's doomsday(2 + 2 + 2 + 0) % 7→6 → Saturday
    Practice →
  6. 6
    Month doomsdayFebruary→28th
    Practice →
  7. 7
    Distance9 − 28→-19
    Practice →
  8. 8
    Final answer(6 + -19) % 7→1 → Monday
Practice the Doomsday algorithm →