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July 20, 1959 was a
Monday

July 20, 1959 was a Monday — that’s 24,430 days ago. Below you can see exactly how to work the weekday out in your head with the Doomsday algorithm, along with a few other facts about the date.

Weekday
Monday
Day of year
201 of 365
ISO week
Week 30
Leap year?
No
Zodiac sign
Cancer
Days ago
24,430

How to solve: July 20, 1959

  1. 1
    Century anchor1900s→Wednesday (3)
    Practice →
  2. 2
    Divide by 1259 ÷ 12→4
    Practice →
  3. 3
    Remainder of 1259 % 12→11
    Practice →
  4. 4
    Divide remainder by 411 ÷ 4→2
    Practice →
  5. 5
    Year's doomsday(3 + 4 + 11 + 2) % 7→6 → Saturday
    Practice →
  6. 6
    Month doomsdayJuly→11th
    Practice →
  7. 7
    Distance20 − 11→9
    Practice →
  8. 8
    Final answer(6 + 9) % 7→1 → Monday

On this day in history

  • 1969Apollo 11 Moon Landing

Related dates

Day beforeJuly 19, 1959 — SundayDay afterJuly 21, 1959 — TuesdayOne year earlierJuly 20, 1958 — SundayOne year laterJuly 20, 1960 — Wednesday
Want to be able to do this for any date in seconds? Read the guide or practice the algorithm.
Did you know? Did you know that the third Monday of January is often referred to as 'Blue Monday' and is considered the most depressing day of the year?