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November 23, 2004 was a
Tuesday
How to solve:
November 23, 2004
1
Century anchor
2000s
→
Tuesday (2)
Practice →
2
Divide by 12
4 ÷ 12
→
0
Practice →
3
Remainder of 12
4 % 12
→
4
Practice →
4
Divide remainder by 4
4 ÷ 4
→
1
Practice →
5
Year's doomsday
(2 + 0 + 4 + 1) % 7
→
0 → Sunday
Practice →
6
Month doomsday
November
→
7th
Practice →
7
Distance
23 − 7
→
16
Practice →
8
Final answer
(0 + 16) % 7
→
2 → Tuesday
Practice the Doomsday algorithm →