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 0EmVD7GEy2MbDgAAbAwnHQ (envelope-from ) for ; Sat, 21 Jan 2023 07:22:41 +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 rjVlD7GEy2MVDQEAauVa8A (envelope-from ) for ; Sat, 21 Jan 2023 07:22:41 +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 B180A23DF8 for ; Sat, 21 Jan 2023 07:22:40 +0100 (CET) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pJ7GH-0003Wo-U8; Sat, 21 Jan 2023 01:21:57 -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 1pJ7GG-0003WW-R5 for emacs-orgmode@gnu.org; Sat, 21 Jan 2023 01:21:56 -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 1pJ7GF-00017v-G1 for emacs-orgmode@gnu.org; Sat, 21 Jan 2023 01:21:56 -0500 Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1pJ7GC-000ACr-8s for emacs-orgmode@gnu.org; Sat, 21 Jan 2023 07:21:52 +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: Sat, 21 Jan 2023 13:21:46 +0700 Message-ID: References: <63c66048.630a0220.427bf.a5f6@mx.google.com> <87r0vtiks0.fsf@localhost> <63c671c0.a70a0220.61aa5.56b8@mx.google.com> <87fsc88aq9.fsf@localhost> <63c7dd3d.170a0220.6b4d6.f84f@mx.google.com> <877cxk6oeu.fsf@localhost> <63c86454.170a0220.80970.652d@mx.google.com> <63c8f5a6.170a0220.ea8cf.7f96@mx.google.com> <63c9b654.170a0220.d82d2.4254@mx.google.com> <87lelxk87a.fsf@tsdye.online> <63ca5101.630a0220.b2298.3363@mx.google.com> <63cb2d0b.630a0220.f919a.6174@mx.google.com> 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: <63cb2d0b.630a0220.f919a.6174@mx.google.com> 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=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, NICE_REPLY_A=-0.089, 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-Flow: FLOW_IN X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1674282161; 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=webSg4uDbuvDmkJcTiDLOyKGHEr5SkB5EYKmeEKdECo=; b=UQCpGi+we32Vkcv4l0zhz5iacH3uBISS+Lhdu+vIXZ/LhukvDq/8irnvOz0Jyrnu5uVvV8 6ADoPnE1g/K36jtmqhjjzeJBHR2cd1kuIk7sVODwMGfG7duN9GnP3Sx07X92wjrW7+yiWP WM0bRqPr54uILDQKksOEF4YOjysemIW3Akg5T3Pk5V9UDw6ggFo3aYrwyoFIPFDI1xy2ni dOMulChCF7E9y4IzNI9D+zx+JqgCFNBNaZ/Fg/tivyVKM5ycZXaaqpetc8GM2gIMBFLZXB fVHJ6B2CaBWLSwAVvCFtl17qe6IrEjlyxqCDOTBMvOqyu0oVTToyCplnMZl1cg== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=gmail.com (policy=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" ARC-Seal: i=1; s=key1; d=yhetil.org; t=1674282161; a=rsa-sha256; cv=none; b=tlMnzjOub7BYCi0+R1ANyWk/ByfwEXj0cKybuEIDU6cdHfgEIL3fQG3tQzJpjPgwkyAXgx ROtTJtYziMwjy/IHuJAB2TzgqLeboSTLPtd7Bjddj2p5hrU/JkpChHMdWidTM58qFsHoDt S/OHMLmUrHlIJlNr5bIz8uzPQsvmJGasvtFPh5MxpLlLmIn3ZAxBHWdbpJhSG6KuhvRLkW PPnzBlT6IHbDLc1raCKEza09MeiuVG3CWTKUm5rRBHxwD6MHcKKkWp+XaBAeyRdNuwPIDF RZ9Rr4h7HF6k3iJj1yRlZ0dOSQolPnzhkNzoiWZsUzkMU5BBXiYuoRrT15c5tg== X-Migadu-Scanner: scn1.migadu.com X-Migadu-Spam-Score: 4.09 X-Spam-Score: 4.09 X-Migadu-Queue-Id: B180A23DF8 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=gmail.com (policy=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" X-TUID: CpJceWFhCHVU On 21/01/2023 06:38, Tim Cross wrote: > > - Use UTC for meetings which are not face-to-face and which involve > people form different time zones. I agree with you that it should considered as first option by whose who are planning an event. They still may prefer to choose timezone of particular location because it is mixed meeting with attenders of both types: face to face and online, or just because most of on-line participants are expected from particular area. However timezone may be out of your control if you receive invitation to join on-line to some meeting. Attempt to convert it to UTC may lead to problems. So the reason to choose UTC or specific timezone for particular timestamp is not really technical one. It is just decision of some people. Do you have any objection to the following statements: - UTC is a recommendation for planning when participants are scattered over multiple timezones. - You admit that some timestamps in your files may be specified as time zone identifier + local time relative to this zone. - In both cases you may configure overlays to use local timezone or another one whatever you currently find convenient. - Time chooser offers several time zone options. > I would also argue UTC is good for 'traditional' timestamps which record > a specific point in time and for situations where you want accurate > calculations of time durations. Mostly agree, so I prefer to postpone discussion of details till confirming agreement in respect to future timestamps.