From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Jean Louis Newsgroups: gmane.emacs.help Subject: Re: even elder races get tired of waiting Date: Sun, 21 Mar 2021 20:13:27 +0300 Message-ID: References: <87v99lr26w.fsf@zoho.eu> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="38487"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.0.6 (2021-03-06) Cc: help-gnu-emacs@gnu.org To: Jude DaShiell Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Mar 21 18:19:22 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lO1jV-0009ws-Gm for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 21 Mar 2021 18:19:21 +0100 Original-Received: from localhost ([::1]:38210 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lO1jU-00070i-He for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 21 Mar 2021 13:19:20 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55892) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lO1hy-0006z7-PX for help-gnu-emacs@gnu.org; Sun, 21 Mar 2021 13:17:46 -0400 Original-Received: from stw1.rcdrun.com ([217.170.207.13]:47587) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lO1hw-00051r-M6 for help-gnu-emacs@gnu.org; Sun, 21 Mar 2021 13:17:46 -0400 Original-Received: from localhost ([::ffff:41.202.241.53]) (AUTH: PLAIN securesender, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 000000000001E07F.0000000060577FB4.000064A9; Sun, 21 Mar 2021 10:17:39 -0700 Mail-Followup-To: Jude DaShiell , help-gnu-emacs@gnu.org Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:128480 Archived-At: * Jude DaShiell [2021-03-21 18:13]: > Usually when this kind of question comes up it's in connection with business > and close of business on given days. So business open on monday to close of > business on Friday given it's the same week would be 5 days. Yes, when it is so practical it has clear meaning. On my side I am using periods of time to estimate completion dates. >From 21st to 22nd is definitely one day, but we did not say when is begin and when is end exactly. SELECT DATE(DATE '2021-03-21' + interval '1 days'); date ------------ 2021-03-22 then from this SQL result I can see that result deducted from Friday 12th for 5 days yields 7th March at 00:00 o'clock, so then I can think that in that case Friday was not calculated, I can assume calculation was from Friday 00:00 o'clock, it does not include full Friday. Friday deducted for 5 days does not yield Monday, it yields Sunday 00:00 o'clock. SELECT '2021-03-12'::date - interval '5 days'; ?column? --------------------- 2021-03-07 00:00:00 Thus computers must start from somewhere, when computer is asked how much is Friday deducted for 5 days, the answer will be Sunday, 00:00 o'clock. Human will say that 5 days work from Monday ends on Friday, there is no Sunday involved.