What the day logo
What the Day
PracticePlayDaily
Copyright © 2026 Jesper Kiledal
All rights reserved
☕Buy me a coffee

November 11, 1918 was a
Monday

How to solve: November 11, 1918

  1. 1
    Century anchor1900s→Wednesday (3)
    Practice →
  2. 2
    Divide by 1218 ÷ 12→1
    Practice →
  3. 3
    Remainder of 1218 % 12→6
    Practice →
  4. 4
    Divide remainder by 46 ÷ 4→1
    Practice →
  5. 5
    Year's doomsday(3 + 1 + 6 + 1) % 7→4 → Thursday
    Practice →
  6. 6
    Month doomsdayNovember→7th
    Practice →
  7. 7
    Distance11 − 7→4
    Practice →
  8. 8
    Final answer(4 + 4) % 7→1 → Monday
Practice the Doomsday algorithm →