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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-Country: US X-Migadu-Flow: FLOW_IN ARC-Seal: i=1; s=key1; d=yhetil.org; t=1673678502; a=rsa-sha256; cv=none; b=ALoqTaDAcJTQsBV86l2bmf3W9sClt3/2udbb8YM9LruCekj2/u62xfCEvtOM+kG2OaKsnJ Zas3/gV88Nty5I8uv9hA+KtXoYHHB2cRnFw1gD5Uipc4FloVHQWQwvZJ3/NHnjuWIqkEfr eOHUMQ8Z9ocIwNLWwQ632zeVwC3NQ9brMP5C9RJFEyQ4636V/XxPGUSb6L3WGmtiIPQQtg Zs7noG3ddzLxh5ZZM8vLhyuqx4vT/1eCbFOH0FTB/j1x/hlFeuCyqjuvfwDme21Tu/+IRF 1jSTG9yOuVgo2spekyNp+5nDYdXv6D1BESxDNcvAgwWliHnuAa6EKlTSe/PrdQ== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=tuxteam.de header.s=mail header.b=vV3nRxmH; 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=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1673678502; 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:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=CDWhAIBiyb/YWwevvJUOfr44ybalSjkr4MF9rbQh1c0=; b=cNEiQ1GwmcxQ3qL2iRJsOqK74D2fTXJjeeEEpcckncymOuKJ3R9qFQxsQU4A/ORNfdBb2L KAZQViu+uttGgaiGJFvfqqbYdavTzuTeMQxE3FM4vtAVhuT3n8E7f99EpIGHk/k4ytXc9A x/A/19fRpE6oqUuC3G+xDrqgjdwzWvpFobkPQMG31a4PjA3C/Ubi5uUS/LIi5IGtAeDwK5 GNilowlaNl1wXf6j2LzWCQlEixJ2D1r+Q+N11i3yAaVnznaiXQvjbd90Du3+p9xXTYQ8QS ue+t5clHP/77PActDp/NrzBtNCr8SPW02eTG1IQFpRze1WuZwgCcvZ/+A6Th/g== X-Migadu-Spam-Score: -4.01 X-Spam-Score: -4.01 X-Migadu-Queue-Id: F078FC69E X-Migadu-Scanner: scn1.migadu.com Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=tuxteam.de header.s=mail header.b=vV3nRxmH; 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=none X-TUID: 88uW3awCQ9Rt --bxvS4eK5kkgSWDb3 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jan 14, 2023 at 12:51:31AM -0500, Tom Gillespie wrote: > Without wading too far into this at the moment, > timezones are an extremely tricky problem with > a whole bunch of design considerations. I am > reproducing the heading comment from laundry's > timestamp.rkt in its entirety here. Best! > Tom >=20 > https://github.com/tgbugs/laundry/blob/master/laundry/grammar/timestamp.r= kt [...] > ; are two cases, one where the location is clear, "napoleon on [1812-01-0= 1]" > ; and the other where it is not, the issue is that a single date refers Where location also includes time, sometimes (think DSTs). IMO, a timezone is nice for added context, but meaningless without a concrete offset wrt some agreed upon base (UTC, here on Earth, for example). Unless you use clearly different shorthands (e.g. CST for Central Standard Time [1] and CDT for Central Daylight Time). The nice cherry on top of that is that this context info is sometimes relevant and sometimes not. A regular appointment ("brush teeth") may want to be seen relative to the current time zone (so it "moves" when I travel from Berlin to New York), another ("Jitsi meeting with my colleagues in Delhi, Dar-Es-Salam and Denpasar") might not. I warmly recommend the Wikipedia page [2] on that topic. An interesting problem :) Cheers [1] Eh. Nevermind that it also can mean Cuba Standard Time or China Standard Time. [2] https://en.wikipedia.org/wiki/Time_zone --=20 t --bxvS4eK5kkgSWDb3 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQRp53liolZD6iXhAoIFyCz1etHaRgUCY8JOZwAKCRAFyCz1etHa RvbWAJ4z7WqeerneUocj9MXfp41+sdnAyACeLieDU+kJNCjdlxNWB+LY6ifaMhk= =gJmV -----END PGP SIGNATURE----- --bxvS4eK5kkgSWDb3--