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April 3, 2010 was a
Saturday
How to solve:
April 3, 2010
1
Century anchor
2000s
→
Tuesday (2)
Practice →
2
Divide by 12
10 ÷ 12
→
0
Practice →
3
Remainder of 12
10 % 12
→
10
Practice →
4
Divide remainder by 4
10 ÷ 4
→
2
Practice →
5
Year's doomsday
(2 + 0 + 10 + 2) % 7
→
0 → Sunday
Practice →
6
Month doomsday
April
→
4th
Practice →
7
Distance
3 − 4
→
-1
Practice →
8
Final answer
(0 + -1) % 7
→
6 → Saturday
Practice the Doomsday algorithm →