From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp12.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms5.migadu.com with LMTPS id 6HOMK7vdxmNIIgAAbAwnHQ (envelope-from ) for ; Tue, 17 Jan 2023 18:41:15 +0100 Received: from aspmx1.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp12.migadu.com with LMTPS id 0CSFK7vdxmNKTAEAauVa8A (envelope-from ) for ; Tue, 17 Jan 2023 18:41:15 +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 748D1BD28 for ; Tue, 17 Jan 2023 18:41:15 +0100 (CET) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pHpwp-0001cJ-JR; Tue, 17 Jan 2023 12:40:36 -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 1pHpwk-0001be-5r for emacs-orgmode@gnu.org; Tue, 17 Jan 2023 12:40:30 -0500 Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pHpwi-0001FQ-DD for emacs-orgmode@gnu.org; Tue, 17 Jan 2023 12:40:29 -0500 Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1pHpwg-0006gK-MA for emacs-orgmode@gnu.org; Tue, 17 Jan 2023 18:40:26 +0100 X-Injected-Via-Gmane: http://gmane.org/ To: emacs-orgmode@gnu.org From: Max Nikulin Subject: Re: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda Date: Wed, 18 Jan 2023 00:40:20 +0700 Message-ID: References: <86zgamtv6o.fsf@gmail.com> <87tu0t1i0c.fsf@localhost> <87k01p1gvx.fsf@localhost> <87tu0rex01.fsf@localhost> <87ilh6jpgk.fsf@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.4.2 Content-Language: en-US In-Reply-To: <87ilh6jpgk.fsf@localhost> Received-SPF: pass client-ip=116.202.254.214; envelope-from=geo-emacs-orgmode@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: 27 X-Spam_score: 2.7 X-Spam_bar: ++ X-Spam_report: (2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FORGED_GMAIL_RCVD=1, FORGED_MUA_MOZILLA=2.309, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, NICE_REPLY_A=-0.097, NML_ADSP_CUSTOM_MED=0.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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-Country: US X-Migadu-Flow: FLOW_IN ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=none; 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=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=gmail.com (policy=none) ARC-Seal: i=1; s=key1; d=yhetil.org; t=1673977275; a=rsa-sha256; cv=none; b=quJvbfDqkryfqMFT20250h6o/5Zcg+QuI1aHE4joYwH6spQN/Gvb7VPxnJMf8lRpLPaS3M rHb2ayj3v+LTE5h5+gLbvp8X16bVGrB7EC2bWbBVQYKmJcphSj1Ri5ZQCFUupHG+i28xKV Wblm6ndtomd0Vboom6jqv03Ho3GYnUZjoB4WstYQuZGv9eXNPk7R6uGOxQvK5KYwiokshA gXbRcgNmL7E5so7ikGtEeeFjHRbg2ZkUZJ6eNlPNax6MJONbSkpVenSHOzOhxX1emGp9Td 7AL9ZD9/PenosbhadxeCMybEwJx9hFx1HFn0nl102dX3jgEz95PakHecg2pYxQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1673977275; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=hxqhW2GLxdc3u/RKKzQIFI6d8wcFb5NV+OLlXKK350s=; b=C3eLQVsTVCyqa2+gYtaWs3qZMRrtMSEF/8J0kxV6SN+0rYzGij0obG5PnoOKmAcst/ydaH eA85cJDlEeH0AW/ZE2nPlaikIWMvOI0i7yKNMgR3PIQ5h4z55W+1iBISzTtRZiREpKIsSi wgDfWlYfLxhZuSOJj5yvnA7hL+Y6hkaJH/nPQ/EB0J87ohU43j/DtAzYPjfqPqIUx0ypr8 7aq3VT+fioSfo3j3Z+0aKpYTUwKel79vo65IGig3CC9bw9mTniC4ShHqqtN2m/bGOfbxD1 Ii+Qpu8sQXc7MU+aozSEh2MoC/O2iBSvQG2ellhl0hRI9BGKdnMZnlBIFR20oA== Authentication-Results: aspmx1.migadu.com; dkim=none; 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=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=gmail.com (policy=none) X-Migadu-Spam-Score: -2.33 X-Spam-Score: -2.33 X-Migadu-Queue-Id: 748D1BD28 X-Migadu-Scanner: scn1.migadu.com X-TUID: dq2NKQX+eSJT On 17/01/2023 01:37, Ihor Radchenko wrote: >> Some formats may be confusing for users, e.g. TZ=GMT+5 actually means >> -0500 offset. > Let's just recommend +-XXXX and @location in the manual. And mention > briefly that TZ format is supported in addition. > > We might also provide an optional linter for GMT, if necessary. "GMT" in this example is an arbitrary string. It adds some complications to the linter. Notice that in POSIX "GMT+5" is *definition* of timezone with "GMT" abbreviation and shifted by 5 hours to the west. It is not a *reference* to IANA (Olson) Etc/GMT+5. I do not remember concerning "GMT", but Qt allows to use something like "UTC+5" (east like IANA, not west like POSIX). I am unsure concerning Windows, it may have an option of quite similar variant. That is why I am not sure to which degree Org should be liberal in respect to various time zones.