From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp10.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 yGicI5mp12NZHwEAbAwnHQ (envelope-from ) for ; Mon, 30 Jan 2023 12:27:21 +0100 Received: from aspmx1.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp10.migadu.com with LMTPS id aPS3Ipmp12MiCgAAG6o9tA (envelope-from ) for ; Mon, 30 Jan 2023 12:27:21 +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 D59F12E097 for ; Mon, 30 Jan 2023 12:27:20 +0100 (CET) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pMSIr-0000d2-9e; Mon, 30 Jan 2023 06:26:25 -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 1pMSIe-0007tb-Ec for emacs-orgmode@gnu.org; Mon, 30 Jan 2023 06:26:13 -0500 Received: from relay-egress-host.us-east-2.a.mail.umich.edu ([13.59.128.245] helo=avid-nisien.relay-egress.a.mail.umich.edu) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pMSIa-00008B-5Q for emacs-orgmode@gnu.org; Mon, 30 Jan 2023 06:26:12 -0500 Received: from excited-tupilaq.authn-relay.a.mail.umich.edu (ip-10-0-72-161.us-east-2.compute.internal [10.0.72.161]) by avid-nisien.relay-egress.a.mail.umich.edu with ESMTPS id 63D7A94E.5C13B62.3901EFE0.3095801; Mon, 30 Jan 2023 06:26:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=umich.edu; s=relay-2018-08-29; t=1675077965; bh=XvAHTSIqEb4hj/Z0fE4zYOMBvYurNaWfbzCsV6frMKQ=; h=To:cc:From:Subject:In-reply-to:References:Date; b=MyIkWMDWSrQ1G8qIm9u4h6obr/GbXs7edGhXZaMcLSX/rlXa3yq9Q/j31ccE54xb0 kw30ZxWCw1BFOfMIrXsC6u7EkXaAvEh006viRqtoQ964a8bv3i0Ne7XaxwNQU9G99z kegBbHgfYjFrS962HggnD38GBCOcUvD4D7ixowZ8MEBm42DiSYUjolxypi+4/T7aui TEWSlIT5nRfN7cpqbSe2uVn7wDRcRQ/Huxlx4ycCw+yjaxTfRsGriWj3QGskHTEegC dJnqUh9FCQWvNbRs/uUkRssc9RSJU9sjXl6cdGZl2TBtZgFZdGv1XOMNCFA8ckXXBh S/Z5VR3HSP5Iw== Received: from localhost (Mismatch [85.103.28.184]) by excited-tupilaq.authn-relay.a.mail.umich.edu with ESMTPSA id 63D7A94A.38F7B84F.7DB373F2.1543255; Mon, 30 Jan 2023 06:26:04 -0500 To: Ihor Radchenko cc: Sterling Hooten , "Thomas S. Dye" , Tim Cross , Jean Louis , Daryl Manning , rjhorn@alum.mit.edu, emacs-orgmode@gnu.org From: Greg Minshall Subject: Re: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda In-reply-to: <87lelo8c9r.fsf@localhost> 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> <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> Comments: In-reply-to Ihor Radchenko message dated "Fri, 27 Jan 2023 11:09:20 +0000." 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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=1675078041; 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=XvAHTSIqEb4hj/Z0fE4zYOMBvYurNaWfbzCsV6frMKQ=; b=W7q2f9/zcnOUaYXUbBilKQXO8vtMzcoIzwQrr1Z7OnoH4VBGA5JUXhdTYzsQA2zq5XyJI4 m8xmGaTbDAhJmEs6VxwtA08ZGMUnr/jMv1yNL5gNbqiOwHLJ7BMFj48KDR1iBB/qQbg5qq 3yPo9qwBGBsQi91ibLE9Mjfs+KbV+JppsdlkAYVQcBG08pVV7GE3kJUYqNkUs5VwwcH1CZ LnwUJ0PMaXXcEnNXL+0xmhgsXGT+zoUzHdBbXyiAL/DFtUTcK55Cvi0q2RgSEKkm7JWTkR 9AhLfUsfZ3uHZ98pjJeXCFufZtm0kFIZEsIbQ/A86qVgxawWvUJFAXI4EyDxFA== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=umich.edu header.s=relay-2018-08-29 header.b=MyIkWMDW; 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=umich.edu ARC-Seal: i=1; s=key1; d=yhetil.org; t=1675078041; a=rsa-sha256; cv=none; b=S0QW3Gotgsew4ITGwINnwAYStmNunqCBamgOyaTVlnkcVnoHAhyGOsE1K4BIVX4Yzr6oYj vPQ85x61JzPZnysjvXTUsVmfh+0SXfzeYFjOaKUyKNPZ951HnzMUoSp25KzUqosI2bl7ju HxLOzYDgMzPtTN9BZoAnbo42Hub4YR9ChtICXlIJ9LX9h5bJZcBMWafLAVbRqdIedYTp88 7FYNKHo6SDwqwnSkmdrShZLgIxVNl3flenQhElKAEUHGF1Ds/N8DzBRe3woduU6FiMH/zv yvRVG5TH1hGWmp8vDv0tgwSGjGki0E2oUPQE/zuAoa2P6BawbJpy88sBw3ZvDg== Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=umich.edu header.s=relay-2018-08-29 header.b=MyIkWMDW; 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=umich.edu X-Migadu-Scanner: scn0.migadu.com X-Spam-Score: -7.78 X-Migadu-Queue-Id: D59F12E097 X-Migadu-Spam-Score: -7.78 X-TUID: 0vVdscU2E3Wu Ihor, Sterling, et al., just a thought/reminder. there are "semantics" and "encoding". a spec like ISO-8601 specifies both. the important thing for org-mode is to use an encoding that 1. is easily parsable/understandable by the mere mortal 2. allows expression of all the semantics of the underlying spec/specs (be that ISO-8601, this new IETF spec, the Library of Congress spec, etc.) 3. and, importantly, is designed to *try* to follow updates to the underlying spec/specs (which will inevitably happen) in my experience, it is easiest to accomplish 2 and 3 by adopting the encoding in the underlying spec/specs (if "specs" -- hopefully they are compatible! :) but, i don't doubt that other encodings that accomplish 1, and still accomplish 2 and 3, exist. possibly, an important step forward is to complete the sentence, "Org-mode datestamps are intended to conform to the semantics (but not necessarily the encoding) specified in the following specifications: ...". cheers, Greg