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Re: [whatwg] Forms-related feedback

From: Ian Hickson <ian@hixie.ch>
Date: Wed, 16 Jan 2013 05:44:37 +0000 (UTC)
To: "TAMURA, Kent" <tkent@chromium.org>
Message-ID: <Pine.LNX.4.64.1301160536090.2101@ps20323.dreamhostps.com>
Cc: whatwg <whatwg@whatwg.org>
On Wed, 16 Jan 2013, TAMURA, Kent wrote:
> > 
> > The key difference is that Google Calendar converts the time to UTC on 
> > the backend. That's not the same as type=datetime-local with an 
> > optional timezone selector. In fact it's the precise key difference 
> > between datetime-local and datetime.
> 
> I don't think so.  If you make a repeating event in a region with 
> daylight saving time, Google Calendar respects the local time which you 
> specified.

Yes, for future events it adjusts the time so as to appear as if the time 
the user specified stays the same. But it's still converted to a global 
time -- other people looking at the calendar in different time zones see 
the event as being at the specified absolute time, not the specified local 
time. (In practice, I expect Google Calendar is a lot more clever than 
most sites would be for this kind of thing, and therefore as usual Google 
isn't quite simple enough to actually use what we provide in the spec...)

I would love if we could have the browsers provide a time zone 
geographical location selector, but in practice these change so suddenly, 
and with so little notice, that it's not really practical. Updates would 
have to be pushed with minimal notice, which is unlikely, and Web authors 
around the world would have to coordinate updates to their sites in 
parallel with the browsers updating, etc. It would be a nightmare.

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'
Received on Wednesday, 16 January 2013 05:45:03 GMT

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