Function            isPM - the the hour AM or PM

  Syntax              #include <timehk.h>
                      (boolean) isPM(hr)

  Prototype in        timehk.h

  Remarks             determines if hr in 24-hour army time is AM or PM.

  Return value        returns TRUE if hr is noon (12) or later or FALSE
                      if hr is AM.

  See also            time_convert(), to24hour(), tohour()