CAL(1)                                                     CAL(1)

     NAME
          cal - print calendar

     SYNOPSIS
          cal [ month ] [ year ]

     DESCRIPTION
          Cal prints a calendar.  Month is either a number from 1 to
          12, a lower case month name, or a lower case three-letter
          prefix of a month name.  Year can be between 1 and 9999.  If
          either month or year is omitted, the current month or year
          is used.  If only one argument is given, and it is a number
          larger than 12, a calendar for all twelve months of the
          given year is produced; otherwise a calendar for just one
          month is printed.  The calendar produced is that for England
          and her colonies.

          Try
               cal sep 1752

     SOURCE
          /sys/src/cmd/cal.c

     BUGS
          The year is always considered to start in January even
          though this is historically naive.

          Beware that `cal 90' refers to the early Christian era, not
          the 20th century.