From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp12.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms5.migadu.com with LMTPS id ODgIFLB122N8HAEAbAwnHQ (envelope-from ) for ; Thu, 02 Feb 2023 09:34:56 +0100 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp12.migadu.com with LMTPS id 4CTdE7B122MeRQAAauVa8A (envelope-from ) for ; Thu, 02 Feb 2023 09:34:56 +0100 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id D0F4F3FFB1 for ; Thu, 2 Feb 2023 09:34:55 +0100 (CET) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pNV30-0001Oo-M4; Thu, 02 Feb 2023 03:34:22 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pNV2u-0001KC-SG for emacs-orgmode@gnu.org; Thu, 02 Feb 2023 03:34:21 -0500 Received: from mout02.posteo.de ([185.67.36.66]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pNV2s-00088B-My for emacs-orgmode@gnu.org; Thu, 02 Feb 2023 03:34:16 -0500 Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id A188A2406EC for ; Thu, 2 Feb 2023 09:34:12 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1675326852; bh=xf9lfqUqR20L0P+Zw7uSJY6CUCYWU1kwmsOsedITcHA=; h=From:To:Cc:Subject:Date:From; b=dSU6it6xO9nO/mFYt/xzpUF2opZkTbKHZ10uVR4O3tpXv4z/3NOEhwAOzEEj4Qb+E ae/aKRXHvJ+3HntbavQWLZzgGhpf4kx5aTdattR5zv1lNwb13VM0e7mLnKmV9kLE0B JkwLaInWdN9nXPnQcNH+Pive4zoGISZ3m+PJJq3mD2NgAmdUSlilxbwwOwUknZDfvN 9cxWy8fDAQu2qOwd9pnj6du55rVkEAdbJ7vJ3ZKJgZJR4rZqRvf5k5tALmaAAMxwww jg6PN1l14iHI0be9cUUrGTO21Z7Eu2/sJR26ypNGAFR9miLXAYGJw9aDyMl7gHq8A5 H0crWePdy9HJg== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4P6sX35HpFz6tmG; Thu, 2 Feb 2023 09:34:11 +0100 (CET) From: Ihor Radchenko To: Max Nikulin Cc: emacs-orgmode@gnu.org Subject: Re: POSIX TS spec reverses the meaning of TZ offset compared to ISO (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) In-Reply-To: References: <877cxk6oeu.fsf@localhost> <63c86454.170a0220.80970.652d@mx.google.com> <63c8f5a6.170a0220.ea8cf.7f96@mx.google.com> <63c9b654.170a0220.d82d2.4254@mx.google.com> <87mt6e86sr.fsf@tsdye.online> <63c9d976.620a0220.a7d40.113b@mx.google.com> <87tu0mjb24.fsf@tsdye.online> <63ca1283.170a0220.5bc81.0fdd@mx.google.com> <87pmb9k8oi.fsf@tsdye.online> <3035CDD5-41DD-4516-9E4E-9E0DF16BE2E0@gmail.com> <87lelo8c9r.fsf@localhost> <2150768.1675077958@archlinux> <87tu063ox2.fsf@localhost> <87r0v9sio1.fsf@christianmoe.com> <87edr9lgq6.fsf@localhost> <87o7qdsf7h.fsf@christianmoe.com> <87v8kljz3n.fsf@localhost> Date: Thu, 02 Feb 2023 08:34:48 +0000 Message-ID: <87h6w4qxcn.fsf@localhost> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=185.67.36.66; envelope-from=yantar92@posteo.net; helo=mout02.posteo.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-orgmode@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-orgmode-bounces+larch=yhetil.org@gnu.org Sender: emacs-orgmode-bounces+larch=yhetil.org@gnu.org X-Migadu-Flow: FLOW_IN X-Migadu-Country: US ARC-Seal: i=1; s=key1; d=yhetil.org; t=1675326896; a=rsa-sha256; cv=none; b=flPWpUVS2b0RliOoC+mPDr91Y25IvD4YWCkRP88h/M+4JsSEgVSzi1gxhFEASrs23ExsEz NF31sXQ3LxgUAmf/lJI92xNBu1aVXC9Q0KXSB/Tb0JgEgrK8ynjccn66wqMJuHiKqJbWKl ervU8Bvn7D7104j+6ickwQW8aPzUhy8ZCRYlBUeAXykje4nPFLRsJlgWXAVmLnmDHaPsiU qayo+MtaK4xP/DyGcIKpgWIrABpPMKa4UvoYFrkmDhf4begiNBMeJmwL4CmbbndFoUlLlm jox8K6O02hxlxyq3SlVrll70gSHPLpfFcqntwXtFhdbKdxatDn8423eoHdjwzA== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=posteo.net header.s=2017 header.b=dSU6it6x; spf=pass (aspmx1.migadu.com: domain of "emacs-orgmode-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="emacs-orgmode-bounces+larch=yhetil.org@gnu.org"; dmarc=pass (policy=none) header.from=posteo.net ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1675326896; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=mlc0tEUw9wjYBtXgYLBLhlVgEf7e6fEsnTWiCQJJSGI=; b=iJlGH4fYc49N1TsEuPDMRITBjxGEh9QVwc5Y4JfejMFSqd0Za2GSeRZo49dnxqjJ6ln/n/ HvMhncxxqE6tVbCKPjW2COHdceOFMsA7NsEnf7DfoueGPN78hWsnIcUm7ZeJo3k8fDg3rl CjUasN0OABeg/QB75lliS97J9/P/AyHDWa3+ihkWcQ3Ua4u+aJQXd8dI54U3/f+LBF9yCU pA+kmUGuBNhd19FCWVei92G6rmggbvfSnqRjwZa/Opyp1+PJtvgbYQHK+H75JeuHs6BhNc TOXyOd0m9x6w1RYGnd43ntPo9fQBXSF1BsD453AoiGUHxRvWfKOHx4rKOnWZyQ== X-Migadu-Scanner: scn1.migadu.com X-Migadu-Spam-Score: -4.55 X-Spam-Score: -4.55 X-Migadu-Queue-Id: D0F4F3FFB1 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=posteo.net header.s=2017 header.b=dSU6it6x; spf=pass (aspmx1.migadu.com: domain of "emacs-orgmode-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="emacs-orgmode-bounces+larch=yhetil.org@gnu.org"; dmarc=pass (policy=none) header.from=posteo.net X-TUID: /LCQZbZ03hY1 Max Nikulin writes: > On 01/02/2023 20:26, Ihor Radchenko wrote: >> >> There is potential confusion coming from the different interpretations >> of the time zone offsets used in ISO8601 and POSIX TZ specs: > > Ihor, I am sorry that I did not reply to your early question. > > Is there a strong reason to support POSIX TZ? Time zones with fixed > offsets are available as e.g. Etc/GMT-8 (unfortunately inverted sign as > well). Because `encode-time' accepts POSIX TZ as argument. So, may as well. Note that Etc/GMT-8 is also accepted as POSIX TZ. -- Ihor Radchenko // yantar92, Org mode contributor, Learn more about Org mode at . Support Org development at , or support my work at