Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751803AbZAEAog (ORCPT ); Sun, 4 Jan 2009 19:44:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752000AbZAEAo1 (ORCPT ); Sun, 4 Jan 2009 19:44:27 -0500 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:54691 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751973AbZAEAo0 (ORCPT ); Sun, 4 Jan 2009 19:44:26 -0500 Date: Mon, 5 Jan 2009 00:44:05 +0000 From: Alan Cox To: david@lang.hm Cc: David Newall , Kyle Moffett , Ben Goodger , Robert Hancock , linux-kernel@vger.kernel.org, linasvepstas@gmail.com, "Jeffrey J. Kosowsky" , MentalMooMan , Travis Crump , burdell@iruntheinter.net Subject: Re: Bug: Status/Summary of slashdot leap-second crash on new years 2008-2009 Message-ID: <20090105004405.2607b506@lxorguk.ukuu.org.uk> In-Reply-To: References: <3ae3aa420901021125n1153053fsdf2378e7d11abbc0@mail.gmail.com> <20090102210430.49649261@diego-desktop> <495E7849.4030706@shaw.ca> <495F0672.6020708@davidnewall.com> <8752a8760901022237r75d408b3i74c703c8ac2d4597@mail.gmail.com> <496076A9.7030907@davidnewall.com> <4960897D.5030603@davidnewall.com> <4961432A.80509@davidnewall.com> <49614835.7000505@davidnewall.com> X-Mailer: Claws Mail 3.5.0 (GTK+ 2.12.12; x86_64-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 717 Lines: 13 > another poster said that NTP packets include information about this > month's leap second, so that implies that they could change monthly. The current rules don't permit this but any rule could be change. However its unlikely. Current the earth rotation people do this twice a year if neccessary. It is also too complex to predict significantly (ie years) in advance when it will be neccessary because the complexity of the tidal forces involved is beyond simulation. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/