IETF Logo Mail Archive

Re: Predictable Internet Time

Joe Touch <touch@isi.edu> Tue, 03 January 2017 22:55 UTC

Return-Path: <touch@isi.edu>
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 D6516129890 for <ietf@ietfa.amsl.com>; Tue, 3 Jan 2017 14:55:36 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -10
X-Spam-Level:
X-Spam-Status: No, score=-10 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, RP_MATCHES_RCVD=-3.1] 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 peNhAJitXC-K for <ietf@ietfa.amsl.com>; Tue, 3 Jan 2017 14:55:35 -0800 (PST)
Received: from boreas.isi.edu (boreas.isi.edu [128.9.160.161]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id CA6B812988C for <ietf@ietf.org>; Tue, 3 Jan 2017 14:55:35 -0800 (PST)
Received: from [128.9.160.211] (mul.isi.edu [128.9.160.211]) (authenticated bits=0) by boreas.isi.edu (8.13.8/8.13.8) with ESMTP id v03Mt1kX002029 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Tue, 3 Jan 2017 14:55:02 -0800 (PST)
Subject: Re: Predictable Internet Time
To: =?UTF-8?B?UGF0cmlrIEbDpGx0c3Ryw7Zt?= <paf@frobbit.se>
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> <B990A5A4-D62B-4E10-9FF7-7BA4377C0958@frobbit.se> <b487d605-6a6d-c5d2-4837-c7847f1c9083@isi.edu> <CAMm+Lwg+aD1DQ_=sr=3_7J2Eq+E16EScycyv7k=fdjrRvqdRVg@mail.gmail.com> <ef64a108-2237-066f-1545-653a37e0814e@isi.edu> <F00FEC5E-709D-421B-8B96-EF0B8ED41D2D@frobbit.se>
From: Joe Touch <touch@isi.edu>
Message-ID: <9422e36e-f5ed-b7ec-7732-9c451584a4ba@isi.edu>
Date: Tue, 3 Jan 2017 14:55:01 -0800
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1
MIME-Version: 1.0
In-Reply-To: <F00FEC5E-709D-421B-8B96-EF0B8ED41D2D@frobbit.se>
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 8bit
X-ISI-4-43-8-MailScanner: Found to be clean
X-MailScanner-From: touch@isi.edu
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf/j23te_sQdIUDewsz_IBNMqQbpzQ>
Cc: Phillip Hallam-Baker <phill@hallambaker.com>, 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 22:55:37 -0000


On 1/3/2017 2:47 PM, Patrik Fältström wrote:
> On 3 Jan 2017, at 20:10, Joe Touch wrote:
>
>> They nearly universally use UTC, which is managed by the ITU.
> UTC is managed by BIPM in Paris, based on the Metre Convention.
>
> The governance of BIPM can be found here:
>
> <http://www.bipm.org/en/about-us/governance/>
>
> Leap seconds are defined by ITU-R, and decided upon by International Earth Rotation and Reference Systems Service (IERS). <https://www.iers.org/>
>
> And possibly more pieces of the puzzle are needed.
>
> So, "its complicated". ;-)

Agreed. Arguably, UTC is calculated by BIPM including leap-second
recommendations by IERS, but the ITU represents its global adoption.

Details not particularly important to this discussion; the point is that
this is a complex issue that has already been addressed. I fail to see
why we just don't consider the Posix definition erroneous and move on...

Joe

v2.8.10 | Report a Bug | By Email