[cynwoody]

Running

cal 1752

on my Mac prints out:

                             1752

      January               February               March
Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa
          1  2  3  4                     1   1  2  3  4  5  6  7
 5  6  7  8  9 10 11   2  3  4  5  6  7  8   8  9 10 11 12 13 14
12 13 14 15 16 17 18   9 10 11 12 13 14 15  15 16 17 18 19 20 21
19 20 21 22 23 24 25  16 17 18 19 20 21 22  22 23 24 25 26 27 28
26 27 28 29 30 31     23 24 25 26 27 28 29  29 30 31
                                            
       April                  May                   June
Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa
          1  2  3  4                  1  2      1  2  3  4  5  6
 5  6  7  8  9 10 11   3  4  5  6  7  8  9   7  8  9 10 11 12 13
12 13 14 15 16 17 18  10 11 12 13 14 15 16  14 15 16 17 18 19 20
19 20 21 22 23 24 25  17 18 19 20 21 22 23  21 22 23 24 25 26 27
26 27 28 29 30        24 25 26 27 28 29 30  28 29 30
                      31                    
        July                 August              September
Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa
          1  2  3  4                     1         1  2 14 15 16
 5  6  7  8  9 10 11   2  3  4  5  6  7  8  17 18 19 20 21 22 23
12 13 14 15 16 17 18   9 10 11 12 13 14 15  24 25 26 27 28 29 30
19 20 21 22 23 24 25  16 17 18 19 20 21 22  
26 27 28 29 30 31     23 24 25 26 27 28 29  
                      30 31                 
      October               November              December
Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa  Su Mo Tu We Th Fr Sa
 1  2  3  4  5  6  7            1  2  3  4                  1  2
 8  9 10 11 12 13 14   5  6  7  8  9 10 11   3  4  5  6  7  8  9
15 16 17 18 19 20 21  12 13 14 15 16 17 18  10 11 12 13 14 15 16
22 23 24 25 26 27 28  19 20 21 22 23 24 25  17 18 19 20 21 22 23
29 30 31              26 27 28 29 30        24 25 26 27 28 29 30
                                            31

September is missing some days.

[Verbosus]

That was due to the adjustment for the days between the Gregoria’s calendar and the Julian calendar.

[Verginius Rufus]

I think there were riots, or at least demonstrations, in England in 1752 by people demanding "Give us back our 11 days!"

Today is the anniversary of the day George Washington was born by the Gregorian calendar--February 22, 1732. By the calendar in use in Virginia when he was born, the date was February 11, 1731.