From owner-freebsd-current@FreeBSD.ORG Tue Jan 3 23:49:22 2006 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 489A416A443 for ; Tue, 3 Jan 2006 23:49:22 +0000 (GMT) (envelope-from jmg@hydrogen.funkthat.com) Received: from hydrogen.funkthat.com (gate.funkthat.com [69.17.45.168]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7312643DE6 for ; Tue, 3 Jan 2006 23:47:32 +0000 (GMT) (envelope-from jmg@hydrogen.funkthat.com) Received: from hydrogen.funkthat.com (localhost.funkthat.com [127.0.0.1]) by hydrogen.funkthat.com (8.13.3/8.13.3) with ESMTP id k03Nkqh7005233; Tue, 3 Jan 2006 15:46:54 -0800 (PST) (envelope-from jmg@hydrogen.funkthat.com) Received: (from jmg@localhost) by hydrogen.funkthat.com (8.13.3/8.13.3/Submit) id k03NkcVm005228; Tue, 3 Jan 2006 15:46:38 -0800 (PST) (envelope-from jmg) Date: Tue, 3 Jan 2006 15:46:38 -0800 From: John-Mark Gurney To: Carlos Amengual Message-ID: <20060103234638.GA69162@funkthat.com> Mail-Followup-To: Carlos Amengual , freebsd-current@freebsd.org References: <20060103120026.EEEC916A41F@hub.freebsd.org> <43BAE883.1090705@informatica.info> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <43BAE883.1090705@informatica.info> User-Agent: Mutt/1.4.2.1i X-Operating-System: FreeBSD 5.4-RELEASE-p6 i386 X-PGP-Fingerprint: B7 EC EF F8 AE ED A7 31 96 7A 22 B3 D8 56 36 F4 X-Files: The truth is out there X-URL: http://resnet.uoregon.edu/~gurney_j/ X-Resume: http://resnet.uoregon.edu/~gurney_j/resume.html Cc: freebsd-current@freebsd.org Subject: Re: freebsd-current Digest, Vol 127, Issue 4 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: John-Mark Gurney List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 Jan 2006 23:49:24 -0000 Carlos Amengual wrote this message on Tue, Jan 03, 2006 at 22:11 +0100: > You are missing the sextants, and their users, which would be much more > complicated to "fix" than those telescopes. If leap seconds are dropped, > ships and planes are going to notice it sooner or later. Having talked with a sextant user... leap seconds don't matter to sextant users... They have a book of times and possitions, and the book is only good for a year or two... so needs to be reprinted, and on reprints, they can take care of the leap second issue... A second wrt sextants on the surface of the earth is about a quarter of a mile, and the rest of the reading is less precise than that, so even if you are a second off, you won't be that much further off course.. so, the only fix for a sextant is a new table of numbers... don't forget the tables HAVE to be updated for precisely the reason leap seconds are inserted... -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."