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[220.235.140.148]) by smtp.gmail.com with ESMTPSA id f206-20020a6238d7000000b0058e12371d96sm4081385pfa.164.2023.01.21.13.30.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 21 Jan 2023 13:30:43 -0800 (PST) Message-ID: <63cc5983.620a0220.a7d40.68f6@mx.google.com> X-Google-Original-Message-ID: --text follows this line-- 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> User-agent: mu4e 1.9.16; emacs 29.0.60 From: Tim Cross To: Max Nikulin Cc: emacs-orgmode@gnu.org Subject: Re: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda Date: Sun, 22 Jan 2023 08:29:48 +1100 In-reply-to: MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=2607:f8b0:4864:20::435; envelope-from=theophilusx@gmail.com; helo=mail-pf1-x435.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1674336687; 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=uliNLELz6jat5+AryZ2RKmi5ru3SpozH2lVbnwrFRRc=; b=AvdLgPuJs/teIeb9x6NU+cETA/dR6JTXLWxb3FEeawnwZfJmZzUO/fHRrGdDuaMjzEwm0Z sj3Lmk1LNLRm+bBHAKd+EM6MF0FFs3MWJMOE75maoKFDlwr9UfoEVHImeGOXKwZhTfgrbr RaXUW6MvCYgEwKxXILu/DXhb5XqaOhdhUVRQ79FHvdJtZOUK+JT07md/wivGO2diY11XxI 4UTi6yCt5LDwSnJlZcjO7QrQy+h3tUCbxFIvT0XtIkxn/8gQkTWPpeWcCTmTHqYxbXeT0e 8R9yWHsQkaNpxQ4/Vnbo33HYLqM87L7OgqH9HRD4N8x9Zeb53GfW2XhN0Hl4Cw== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=PIgiqQ1y; dmarc=pass (policy=none) header.from=gmail.com; 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=1674336687; a=rsa-sha256; cv=none; b=rjCUNCcaVyohtAs+6cB2mPYtJbBfwYOA0Qg7O2eG5Bny1uv8r+unwkLEehL9bIB3BdYOS2 HntAIKPfiDBGcBVnx8p2057ag9TUncw1rSpl+n5bnyyOjChulQl0GIuuwomds5iH5y2OpQ Xjke9CD5MsIrs8XNLxixot3e0KuMnA3+H3saqKhwGk+KWX5isolrhnXEV7EYlZ5Y7iSYPX 4K4kvb9upAdwwx8jeux94LJFRG0o8ygyfg61wZHrSA0T0wpG8/2vlO8lp1hOlTuYDplaZ7 bnYKVxzSLi+0VJKqkkJfb50xZCazcahPGx1QZA2uk6jflqN9Pys0SufarC/5TA== X-Migadu-Scanner: scn1.migadu.com X-Migadu-Spam-Score: -4.77 X-Spam-Score: -4.77 X-Migadu-Queue-Id: 0F7F729D39 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=PIgiqQ1y; dmarc=pass (policy=none) header.from=gmail.com; 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: PQ/B3FnN2PcI Max Nikulin writes: > 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. > That seems to be in-line with what I was arguing, so yes, would agree. >> 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.