Path: nntp.gmd.de!xlink.net!howland.reston.ans.net!noc.near.net! saturn.caps.maine.edu!maine.maine.edu!io20671 Organization: University of Maine System Date: Mon, 20 Jun 1994 09:36:34 EDT From: Tony <IO20...@MAINE.MAINE.EDU> Message-ID: <94171.093634IO20671@MAINE.MAINE.EDU> Newsgroups: comp.unix.misc Subject: Where can I get time zone data??? Lines: 5 I need to write a program (UNIX ansi C) to convert from one time zone to another...with places specified by lat/lon.....any ideas??? Thanks. Tony
Newsgroups: comp.infosystems.gis,comp.unix.misc Path: nntp.gmd.de!xlink.net!howland.reston.ans.net!usc!elroy.jpl.nasa.gov! ucla-cs!twinsun!eggert From: egg...@twinsun.com (Paul Eggert) Subject: Re: Time zones from lat/lon data?????? Message-ID: <CrpqHH.Hty@twinsun.com> Sender: use...@twinsun.com Nntp-Posting-Host: spot Organization: Twin Sun Inc, El Segundo, CA, USA References: <94171.095950IO20671@MAINE.MAINE.EDU> <94171.093634IO20671@MAINE.MAINE.EDU> Date: Mon, 20 Jun 1994 20:34:27 GMT Lines: 8 Tony <IO20...@MAINE.MAINE.EDU> writes: > If given a lat/lon...I need to find the time zone...any ideas???? There's no good free database to do this that I know of. It's a harder problem than it sounds. To get an idea of its scope, you might FTP the latest version of Arthur David Olson's time zone database from elsie.nci.nih.gov in pub/tz*.
Newsgroups: comp.infosystems.gis,comp.unix.misc Path: bga.com!news.sprintlink.net!get.hooked.net!decwrl!hookup! yeshua.marcam.com!MathWorks.Com!europa.eng.gtefsd.com!darwin.sura.net! osceola.cs.ucf.edu!fang!tous!bilver!bill From: b...@bilver.oau.org (Bill Vermillion) Subject: Re: Time zones from lat/lon data?????? Organization: W. J. Vermillion - Orlando / Winter Park, FL Date: Thu, 23 Jun 1994 16:11:20 GMT Message-ID: <1994Jun23.161120.385@bilver.oau.org> References: <94171.095950IO20671@MAINE.MAINE.EDU> <94171.093634IO20671@MAINE.MAINE.EDU> <CrpqHH.Hty@twinsun.com> Lines: 17 In article <CrpqHH....@twinsun.com>, Paul Eggert <egg...@twinsun.com> wrote: >Tony <IO20...@MAINE.MAINE.EDU> writes: >> If given a lat/lon...I need to find the time zone...any ideas???? >There's no good free database to do this that I know of. >It's a harder problem than it sounds. To get an idea of its scope, >you might FTP the latest version of Arthur David Olson's time zone >database from elsie.nci.nih.gov in pub/tz*. There was a quite large time zone program data file posted to the net a couple of years ago. I lost my copy in a hard disk crash. I recall it was originally from the U.S.Navy - and had information on virtually any place in the world. -- Bill Vermillion - b...@bilver.oau.org | bill.vermill...@oau.org
Newsgroups: comp.infosystems.gis,comp.unix.misc Path: bga.com!news.sprintlink.net!hookup!swrinde!elroy.jpl.nasa.gov!ucla-cs! twinsun!eggert From: egg...@twinsun.com (Paul Eggert) Subject: Re: Time zones from lat/lon data?????? Message-ID: <Crw3Gt.82A@twinsun.com> Sender: use...@twinsun.com Nntp-Posting-Host: tattoo Organization: Twin Sun Inc, El Segundo, CA, USA References: <94171.095950IO20671@MAINE.MAINE.EDU> <94171.093634IO20671@MAINE.MAINE.EDU> <CrpqHH.Hty@twinsun.com> <1994Jun23.161120.385@bilver.oau.org> Date: Fri, 24 Jun 1994 07:00:27 GMT Lines: 14 b...@bilver.oau.org (Bill Vermillion) writes: > In article <CrpqHH....@twinsun.com>, Paul Eggert <egg...@twinsun.com> wrote: > > you might FTP the latest version of Arthur David Olson's time zone > > database from elsie.nci.nih.gov in pub/tz*. > There was a quite large time zone program data file posted to > the net a couple of years ago. I lost my copy in a hard disk > crash. I recall it was originally from the U.S.Navy - and > had information on virtually any place in the world. Most likely that was Olson's database. He quotes some old data from the US Naval Observatory, but his database is now considerably better than the Navy's was.