295748 - vCalendar export incorect date for all day events

Status: RESOLVED INVALID

(Calendar :: General, defect)

Description

[mfilipov]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.8) Gecko/20050511 Firefox/1.0.4

when export events that have "this event last all day" check box checked in
vCalendar (.vcs extension), thouse events are treated as 2 days event when
imported in outlook.

example export
----------------
BEGIN:VEVENT
UID:1C32E30A-FF8E-11D8-BC1A-000D93C2388C-RID
SUMMARY:Memorial Day
CLASS:PUBLIC
X-MOZILLA-RECUR-DEFAULT-INTERVAL:0
DTSTART;VALUE=DATE:20050530
DTEND;VALUE=DATE:20050531
DTSTAMP:20040905T225130Z
END:VEVENT
--------
notice the date generated are actualy two days

Reproducible: Always

Steps to Reproduce:
1. create all day event (by checking "all day event check box)
2. export in vCalendar format
3. examine the file
4. import the file in Outlook for visualization (optional)

Comment 1

[Torsten]

To my opinion, it is correct that for all-day-events the day immediatly after the last day of the event is stored in the field DTEND;VALUE=DATE. Please also refer to the discussion in bug 207121. 

The rfc2445 says for the DTEND-property: "The value MUST be later in time than the value of the "DTSTART" property." From this, one can derive that a VALUE=DATE entry for DTEND must be at least 1 day later than the DTSTART entry.

Moreover, my Outlook showed an imported one-day-event correctly as one-day-event.

Comment 2

[Dan Mosedale (:dmosedale, :dmose)]

This is the way one-day events are defined in iCalendar spec.