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October 29, 1929 was a
Tuesday
How to solve:
October 29, 1929
1
Century anchor
1900s
→
Wednesday (3)
Practice →
2
Divide by 12
29 ÷ 12
→
2
Practice →
3
Remainder of 12
29 % 12
→
5
Practice →
4
Divide remainder by 4
5 ÷ 4
→
1
Practice →
5
Year's doomsday
(3 + 2 + 5 + 1) % 7
→
4 → Thursday
Practice →
6
Month doomsday
October
→
10th
Practice →
7
Distance
29 − 10
→
19
Practice →
8
Final answer
(4 + 19) % 7
→
2 → Tuesday
Practice the Doomsday algorithm →