Perpetual calendar (reworking of an invention of William James Sidis)

Sun Mon Tue Wed Thu Fri Sat
Mon Tue Wed Thu Fri Sat Sun
Tue Wed Thu Fri Sat Sun Mon
Wed Thu Fri Sat Sun Mon Tue
Thu Fri Sat Sun Mon Tue Wed
Fri Sat Sun Mon Tue Wed Thu
Sat Sun Mon Tue Wed Thu Fri
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
1700
1736
1737
1764
1765
1799
1800
1832
1833
1860
1861
1899
1900
1956
1957
2012
2013
2068
2069
2100