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August 21, 2013 was a
Wednesday

August 21, 2013 was a Wednesday — that’s 4,675 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
Wednesday
Day of year
233 of 365
ISO week
Week 34
Leap year?
No
Zodiac sign
Leo
Days ago
4,675

How to solve: August 21, 2013

  1. 1
    Century anchor2000s→Tuesday (2)
    Practice →
  2. 2
    Divide by 1213 ÷ 12→1
    Practice →
  3. 3
    Remainder of 1213 % 12→1
    Practice →
  4. 4
    Divide remainder by 41 ÷ 4→0
    Practice →
  5. 5
    Year's doomsday(2 + 1 + 1 + 0) % 7→4 → Thursday
    Practice →
  6. 6
    Month doomsdayAugust→8th
    Practice →
  7. 7
    Distance21 − 8→13
    Practice →
  8. 8
    Final answer(4 + 13) % 7→3 → Wednesday

Related dates

Day beforeAugust 20, 2013 — TuesdayDay afterAugust 22, 2013 — ThursdayOne year earlierAugust 21, 2012 — TuesdayOne year laterAugust 21, 2014 — Thursday
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 Ash Wednesday marks the beginning of Lent in the Christian calendar?