Color specification

[Martin Konold]

Am Mittwoch, 16. Juni 2004 04:34 schrieb Joon Radley:

Hi Joon,

Please let me know if the following explaination is nit sufficient.

> > No, we require the explicit time zone as we otherwise cannot
> > model several cases. IMHO the explicit time zone does not
> > hurt performance wise.
>
> It was aggreed that the Date/Time will always be UTC. 

> Could you please provide us with your use cases (models) where you need
> explicit time zone information.

Yes, here is an excerpt from 20040604:

> > Am Friday 04 June 2004 09:48 pm schrieb Martin Konold:
> > 
> > Hi Bo,
> > 
> > > > Does not give anything and complicates the format.
> > 
> > Just for completeness: The rfc 2445 defines three kinds of datetime
> > values. 
> > 
> > - local time zone
> > - utc time zone
> > - explicit time zone
> > 
> > The first kind is required in order to represent case like the following:
> > 
> > Imagine a global entity called church of emacs ;-)
> > 
> > There is a big shared calendar used globally by all members. The event is 
> > defined as every morning from 7 am to 8 am is time to pray to RMS.
> > 
> > Such events are explicitly allowed by rfc 2445. 
> > 
> > Please be aware of the fact that even though we are defining our own
> > storage  
> > format we are _not_ free to restrict arbitrarily what can be represented
> > in  
> > our new format. If we would do so we will not be able to represent cases
> > like  
> > the above in Kolab and we will not be interoperable with many iTIP/iMIP 
> > clients anymore. The later leads to _major_ problems with clients not
> > under  
> > our control but _required_ by our customer e.g. 3Com Palm PDAs.
> > 
> > A similar problem arises with recurring events. In this case we also
> > require  
> > the time zone value. 


Yours,
-- martin

Dipl.-Phys. Martin Konold

e r f r a k o n
Erlewein, Frank, Konold & Partner - Beratende Ingenieure und Physiker
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