Gregorian - Monday-based year with week numbers
      January 1752     
   Mo Tu We Th Fr Sa Su
 1        1  2  3  4  5
 2  6  7  8  9 10 11 12
 3 13 14 15 16 17 18 19
 4 20 21 22 23 24 25 26
 5 27 28 29 30 31