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August 21, 2010 was a
Saturday

August 21, 2010 was a Saturday — that’s 5,771 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
Saturday
Day of year
233 of 365
ISO week
Week 33
Leap year?
No
Zodiac sign
Leo
Days ago
5,771

How to solve: August 21, 2010

  1. 1
    Century anchor2000s→Tuesday (2)
    Practice →
  2. 2
    Divide by 1210 ÷ 12→0
    Practice →
  3. 3
    Remainder of 1210 % 12→10
    Practice →
  4. 4
    Divide remainder by 410 ÷ 4→2
    Practice →
  5. 5
    Year's doomsday(2 + 0 + 10 + 2) % 7→0 → Sunday
    Practice →
  6. 6
    Month doomsdayAugust→8th
    Practice →
  7. 7
    Distance21 − 8→13
    Practice →
  8. 8
    Final answer(0 + 13) % 7→6 → Saturday

Related dates

Day beforeAugust 20, 2010 — FridayDay afterAugust 22, 2010 — SundayOne year earlierAugust 21, 2009 — FridayOne year laterAugust 21, 2011 — Sunday
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 in many countries, Saturday marks the beginning of the weekend and a break from the workweek?