NAME: date2string
PURPOSE: create a nice and readable format to print a date
CATEGORY: calendar/string
CALLING SEQUENCE: nice_date = date2string(yyyymmdd)
INPUTS: yyyymmdd the date in the format
yearyearyearyearmonthmonthdayday
KEYWORD PARAMETERS:those of string fonction to specify the
format of the month (the C format)
OUTPUTS: a string containing the date in a easy readable format
COMMON BLOCKS:none
SIDE EFFECTS:?
RESTRICTIONS:?
EXAMPLE:
IDL> print, date2string(19900123)
Jan 23, 1990
IDL> print, date2string(19900123, format = '(C(CMOA))')
JAN 23, 1990