IETF Logo Mail Archive

Re: Predictable Internet Time

Cyrus Daboo <cyrus@daboo.name> Tue, 03 January 2017 18:38 UTC

Return-Path: <cyrus@daboo.name>
X-Original-To: ietf@ietfa.amsl.com
Delivered-To: ietf@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D4DF4129AAC for <ietf@ietfa.amsl.com>; Tue, 3 Jan 2017 10:38:52 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -5.002
X-Spam-Level:
X-Spam-Status: No, score=-5.002 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RP_MATCHES_RCVD=-3.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id RoX1Ig1b0Nab for <ietf@ietfa.amsl.com>; Tue, 3 Jan 2017 10:38:51 -0800 (PST)
Received: from daboo.name (daboo.name [173.13.55.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 4122A129AAB for <ietf@ietf.org>; Tue, 3 Jan 2017 10:38:51 -0800 (PST)
Received: from localhost (localhost [127.0.0.1]) by daboo.name (Postfix) with ESMTP id D2E475FD15E1; Tue, 3 Jan 2017 13:38:49 -0500 (EST)
X-Virus-Scanned: amavisd-new at mydomain = daboo.name
Received: from daboo.name ([127.0.0.1]) by localhost (daboo.name [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hp1uxR0nDebA; Tue, 3 Jan 2017 13:38:49 -0500 (EST)
Received: from [17.150.211.187] (unknown [17.150.211.187]) by daboo.name (Postfix) with ESMTPSA id B51255FD15D6; Tue, 3 Jan 2017 13:38:48 -0500 (EST)
Date: Tue, 03 Jan 2017 13:38:45 -0500
From: Cyrus Daboo <cyrus@daboo.name>
To: Stewart Bryant <stewart.bryant@gmail.com>, Phillip Hallam-Baker <phill@hallambaker.com>
Subject: Re: Predictable Internet Time
Message-ID: <04DD5DFCB528DCD404C81F78@caldav.corp.apple.com>
In-Reply-To: <b27515e2-a36a-7bf2-0ca4-1fae31a9dc21@gmail.com>
References: <CAMm+LwgfQJ8aG5wB=d3fRbbeje3J9o7Z4_DCuP8DL88ouDeKzw@mail.gmail.com> <504e2cea0d1668c31486b05fec0a967a4446aefe@webmail.weijax.net> <CAMm+Lwi_jU6gjdtdM6a2n_9_89tUvWBNXxnMtSjTEA++h1D4Ew@mail.gmail.com> <e0a43370-751f-808c-3719-9716f9cd57d1@isi.edu> <alpine.DEB.2.11.1701031348430.7102@grey.csi.cam.ac.uk> <0bbfcd7c-11a7-0e7f-56f7-eee959b7a947@gmail.com> <CAMm+Lwi0sQyRE_2dMCkwTk7xTiK2JbHhHSPYMkdG2FeBw_6CNA@mail.gmail.com> <7BDE58D23ADF3BC046F8942D@caldav.corp.apple.com> <b27515e2-a36a-7bf2-0ca4-1fae31a9dc21@gmail.com>
X-Mailer: Mulberry/4.1.0b1 (Mac OS X)
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; format="flowed"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline; size="744"
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf/kpD3u52ReowtQDnkmN398xmylVE>
Cc: IETF Discussion Mailing List <ietf@ietf.org>
X-BeenThere: ietf@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: IETF-Discussion <ietf.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ietf>, <mailto:ietf-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ietf/>
List-Post: <mailto:ietf@ietf.org>
List-Help: <mailto:ietf-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ietf>, <mailto:ietf-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 03 Jan 2017 18:38:53 -0000

Hi Stewart,

--On January 3, 2017 at 6:30:19 PM +0000 Stewart Bryant 
<stewart.bryant@gmail.com> wrote:

> Only the UI needs the TZ information, the machine can operate just fine
> with any timescale. That is you present the time in local time, but
> operate in global time, and this is definitely an application that will
> not care about leap seconds.

No that simply does not work. Repeating events or alarms may not involve 
any UI at all, but the device may need to trigger those at a specific local 
time - that means time zone information has to be taken into account 
somewhere. This is a crucial fact of any calendaring and scheduling system 
that those of us who have been using iCalendar (RFC5545) fully appreciate.

-- 
Cyrus Daboo

v2.27.6 | Report a Bug | By Email | System Status