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September 22, 2027 is a
Wednesday
How to solve:
September 22, 2027
1
Century anchor
2000s
→
Tuesday (2)
Practice →
2
Divide by 12
27 ÷ 12
→
2
Practice →
3
Remainder of 12
27 % 12
→
3
Practice →
4
Divide remainder by 4
3 ÷ 4
→
0
Practice →
5
Year's doomsday
(2 + 2 + 3 + 0) % 7
→
0 → Sunday
Practice →
6
Month doomsday
September
→
5th
Practice →
7
Distance
22 − 5
→
17
Practice →
8
Final answer
(0 + 17) % 7
→
3 → Wednesday
Practice the Doomsday algorithm →