[Ietf-calsify] Re: RDATE Question was (rfc 2445 - recurrence set, suggested rewording)

[Andrew N Dowden]

George Sexton wrote:
> The wording for RDATE and EXDATE is very similar and it's raised a
> question in my mind.
>
> Is it required to have a DTSTART entry for RDATE events? ..
I have always considered that  DTSTART was used only when necessary ..

4.8.5.3 Recurrence Date/Times  (RDATE)

  .. This property can appear along with the "RRULE" property
   to define an aggregate set of repeating occurrences. When they both
   appear in an iCalendar object, the recurring events are defined by
   the union of occurrences defined by both the "RDATE" and "RRULE".

(Relevant portions: '.. can appear along with ..', and  'When they both
appear ..')

-- 
_______________________________________________

  SoftDesign Group
  Dowden Software Associates
  P O Box 31 132, Lower Hutt 6315, NEW ZEALAND