Timezone needed?

Bernhard Reiter bernhard at intevation.de
Tue Jun 29 15:58:02 CEST 2004

Hi Joon, Hi Bo,

[ sorry for the late answer, the GNU/Linuxtag trade show in Karlsruhe
kept me very busy.]

On Wednesday 23 June 2004 14:11, Bo Thorsen wrote:
> On Wednesday 23 June 2004 12:10, Joon Radley wrote:

> > > Yes, but my assumption is that we want to save this in one
> > > one event (and save one email with it) having one time that
> > > reoccurs each month.
> > > So it say:
> > > 	each monday
> > > 	9:30 central european timezone with daylight saving,
> > >
> > > This would work, but how would this work with UTC, you would
> > > need to give several times and or make two event entries.
> >
> > Please show me how explicit time zones in the date time format will solve
> > this problem. ( An example of the format )

I guess it is not necessary to completey use the XML format to show
the principal question, pseude code should do it.

Recurring event, saved as:
	Subject: Team gathering
	Recurring: Every first monday
        Time: 9:30  Timezone: Europe/Berlin

So the client know that this is 8:30 UTC in January and 7:30 UTC in July
and will show the appointments there.

> > Also please show me how this must be handled if the appointment is
> > created in another time zone for this example. (E.g The CEO makes the
> > entry while in South Africa (using the CAT as local time), to reoccur in
> > Germany (using CET with and without daylight savings) on his return )

RFC2445 nicely descripes that floating times can have its uses, too,
but this is outside of my remark. I also believe that floating times can
become a hassle in implementing and showing the user something useful.

Above I am using a time and date with a  timezone which is fixed
for each recurring event. When creating the event, the CEO decides
in which timezone he thinks. If he makes the event in Africa/Johannesburg
that means this is 7:30 UTC in January and July leading up to his client
showing him 8:30 in January and 9:30 in July when being in Europe/Berlin.

> Another thing: Since none of the clients support actually doing this, I
> think it's pretty theoretical.

What does Kontact do currently, if we create such an event?
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