Linux cal command not showing proper output

centos-6linuxunix

If you type cal 9 1752 in a Linux terminal you will get strange output. For example:

[max@avi ~]$ cal 9 1752

   September 1752  

Su Mo Tu We Th Fr Sa

       1  2 14 15 16

17 18 19 20 21 22 23

24 25 26 27 28 29 30

Did you notice the date from 3 to 13 is missing? Why is this so? I am using CentOS 6.2.

Best Answer

It is not a problem, these dates were skipped in September 1752.

Britain and the British Empire (including the eastern part of what is now the United States) adopted the Gregorian calendar in 1752, by which time it was necessary to correct by 11 days. Wednesday, 2 September 1752 was followed by Thursday, 14 September 1752.

Reference: http://en.wikipedia.org/wiki/Gregorian_calendar

Related Question