From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolas Goaziou Subject: Re: Time-zone in dates Date: Fri, 26 Jun 2015 23:48:28 +0200 Message-ID: <87twtuta37.fsf@nicolasgoaziou.fr> References: <87zj3moadx.fsf@gmail.com> <87zj3mv9rb.fsf@ucl.ac.uk> <87ioaav72g.fsf@ucl.ac.uk> <87y4j6tgyn.fsf@nicolasgoaziou.fr> <20150626195749.GG5090@fjo-extia-HPdeb> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:41801) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z8bSe-0002oB-4F for emacs-orgmode@gnu.org; Fri, 26 Jun 2015 17:47:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z8bSc-0007H5-Th for emacs-orgmode@gnu.org; Fri, 26 Jun 2015 17:47:00 -0400 Received: from relay4-d.mail.gandi.net ([2001:4b98:c:538::196]:43906) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z8bSc-0007GO-Mj for emacs-orgmode@gnu.org; Fri, 26 Jun 2015 17:46:58 -0400 In-Reply-To: <20150626195749.GG5090@fjo-extia-HPdeb> (francois@avalenn.eu's message of "Fri, 26 Jun 2015 21:57:49 +0200") List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: francois@avalenn.eu Cc: emacs-orgmode@gnu.org Hello, francois@avalenn.eu writes: > Timezones are strange beasts to deal with. True. > It is really simpler programmatically to deal with time offsets > instead. The downside is that you cannot manage DST and other similar > peculiarities but the API is much simpler to write. However, time offsets are not very interesting. Org is (also) about appointments, deadlines... so timezones are more accurate. Also, Emacs contains "timezone.el", which, I assume, should take care of all the heavy duty concerning these beasts, as far as an API is concerned. This requires care, but it should be doable, really, don't you think? > Just please don't confuse timezones and time offsets especially in > documentation as it is not the same thing and it can lead to > confusion. > > I reread from time to time this note from W3C which explains the > difference and why it matters : > http://www.w3.org/TR/2005/NOTE-timezone-20051013/#d2e226 Thank you for the reference. I didn't know about it. Regards, -- Nicolas Goaziou