From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.emacs.gnus.general/84433 Path: news.gmane.org!not-for-mail From: Katsumi Yamaoka Newsgroups: gmane.emacs.gnus.general Subject: Re: format-time-string (was Re: time format on message citation line) Date: Fri, 11 Apr 2014 08:34:38 +0900 Organization: Emacsen advocacy group Message-ID: References: <87a9c4cre4.fsf@gmail.com> <87ioqq3bac.fsf@gmail.com> <87k3ax2knm.fsf@igel.home> <87mwftf4o4.fsf@ucl.ac.uk> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1397172957 14394 80.91.229.3 (10 Apr 2014 23:35:57 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 10 Apr 2014 23:35:57 +0000 (UTC) To: ding@gnus.org Original-X-From: ding-owner+M32679@lists.math.uh.edu Fri Apr 11 01:35:50 2014 Return-path: Envelope-to: ding-account@gmane.org Original-Received: from util0.math.uh.edu ([129.7.128.18]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WYOVX-0004d8-PS for ding-account@gmane.org; Fri, 11 Apr 2014 01:35:48 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.math.uh.edu) by util0.math.uh.edu with smtp (Exim 4.63) (envelope-from ) id 1WYOUo-0006uY-9A; Thu, 10 Apr 2014 18:35:02 -0500 Original-Received: from mx1.math.uh.edu ([129.7.128.32]) by util0.math.uh.edu with esmtps (TLSv1:AES256-SHA:256) (Exim 4.63) (envelope-from ) id 1WYOUm-0006uO-NE for ding@lists.math.uh.edu; Thu, 10 Apr 2014 18:35:00 -0500 Original-Received: from quimby.gnus.org ([80.91.231.51]) by mx1.math.uh.edu with esmtps (TLSv1:AES128-SHA:128) (Exim 4.76) (envelope-from ) id 1WYOUc-0001Am-DE for ding@lists.math.uh.edu; Thu, 10 Apr 2014 18:35:00 -0500 Original-Received: from hampton-mail.hostforweb.net ([205.234.204.210] helo=hampton.hostforweb.net) by quimby.gnus.org with esmtp (Exim 4.80) (envelope-from ) id 1WYOUa-0007yD-Nk for ding@gnus.org; Fri, 11 Apr 2014 01:34:48 +0200 Original-Received: from localhost.localdomain ([127.0.0.1]:35757 helo=localhost) by hampton.hostforweb.net with smtp (Exim 4.80.1) (envelope-from ) id 1WYOUS-0000f0-Bn for ding@gnus.org; Thu, 10 Apr 2014 18:34:41 -0500 X-Face: #kKnN,xUnmKia.'[pp`;Omh}odZK)?7wQSl"4o04=EixTF+V[""w~iNbM9ZL+.b*_CxUmFk B#Fu[*?MZZH@IkN:!"\w%I_zt>[$nm7nQosZ<3eu;B:$Q_:p!',P.c0-_Cy[dz4oIpw0ESA^D*1Lw= L&i*6&( User-Agent: Gnus/5.13001 (=?iso-2022-jp?B?GyRCPz8bKEI=?= Gnus v0.10) Emacs/24.4.50 (i686-pc-cygwin) Cancel-Lock: sha1:tzD6mG05/1ojduzVZAfdODUDYOk= X-OutGoing-Spam-Status: No, score=-2.9 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - hampton.hostforweb.net X-AntiAbuse: Original Domain - gnus.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - jpl.org X-Get-Message-Sender-Via: hampton.hostforweb.net: acl_c_authenticated_local_user: yamaoka X-Source: X-Source-Args: X-Source-Dir: X-Spam-Score: -1.9 (-) List-ID: Precedence: bulk Xref: news.gmane.org gmane.emacs.gnus.general:84433 Archived-At: Eric S Fraga wrote: > Andreas Schwab wrote: >> $ TZ=Australia/Adelaide date +%z >> +0930 > $ TZ=Asia/Kathmandu date +%z > +0545 Oh, what precise verniers they use! I realized it is not rare to set a zone info in units of 15 minutes. Thanks. I'm going to simply remove the filter `(zerop (% tz 3600))'. (`TZ=Mideast/Riyadh87 date +%z' returns +0307, but it's never been used, hasn't it?) I'm still not sure whether the alternative function works correctly against switching the summer time. Folks who live in PST/PDT, MST/MDT, CST/CDT, EST/EDT, etc., how about the following? > But I have a question about the summer time (daylight saving time). > Is a computer clock adjusted automatically when the summer time > starts and ends? If so, does the return value of (current-time-zone) > switch when the day comes? Otherwise, do people who live in such > region have to alter the TZ environment variable manually (twice in > a year)? Thanks.