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December 25, 2029 is a
Tuesday
How to solve:
December 25, 2029
1
Century anchor
2000s
→
Tuesday (2)
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
(2 + 2 + 5 + 1) % 7
→
3 → Wednesday
Practice →
6
Month doomsday
December
→
12th
Practice →
7
Distance
25 − 12
→
13
Practice →
8
Final answer
(3 + 13) % 7
→
2 → Tuesday
Practice the Doomsday algorithm →