[tz] User time zones

[Jaakko Hyvätti]

What others have said, I would put simply: always transmit and store times 
in UTC. Only convert to local timezones in user interfaces.  Otherwise, 
you'll lose your mind, fast.

Also, force your data sources to use UTC.  Otherwise, they'll lose their 
mind too.

-- 
Foreca Ltd                                           Jaakko.Hyvatti at foreca.com
Tammasaarenkatu 5, FI-00180 Helsinki, Finland        http://www.foreca.com