From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: tuhs-bounces@minnie.tuhs.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, LOTS_OF_MONEY,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from minnie.tuhs.org (minnie.tuhs.org [45.79.103.53]) by inbox.vuxu.org (OpenSMTPD) with ESMTP id 7a323551 for ; Tue, 30 Oct 2018 00:06:40 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id A3D0EA203F; Tue, 30 Oct 2018 10:06:39 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 792CCA1FB0; Tue, 30 Oct 2018 10:06:12 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 73EA8A1FB3; Tue, 30 Oct 2018 09:28:40 +1000 (AEST) Received: from www.lemis.com (www.lemis.com [208.86.226.86]) by minnie.tuhs.org (Postfix) with ESMTP id E6CA0A1FAB for ; Tue, 30 Oct 2018 09:28:39 +1000 (AEST) Received: from eureka.lemis.com (lemis.com [192.109.197.81]) by www.lemis.com (Postfix) with ESMTP id 5493C1B72837; Mon, 29 Oct 2018 23:28:38 +0000 (UTC) Received: by eureka.lemis.com (Postfix, from userid 1004) id 0D6FE4494B5; Tue, 30 Oct 2018 10:28:37 +1100 (AEDT) Date: Tue, 30 Oct 2018 10:28:37 +1100 From: Greg 'groggy' Lehey To: Clem Cole Message-ID: <20181029232837.GB27974@eureka.lemis.com> References: <20181029021023.GA27974@eureka.lemis.com> <20181029071652.zzauekw6ikpqd4ur@h-174-65.A328.priv.bahnhof.se> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="wzJLGUyc3ArbnUjN" Content-Disposition: inline In-Reply-To: Organization: LEMIS, 29 Stones Road, Dereel, VIC, Australia Phone: +61-3-5309-0418 Mobile: 0401 265 606. Use only as instructed. WWW-Home-Page: http://www.lemis.com/grog X-PGP-Fingerprint: 9A1B 8202 BCCE B846 F92F 09AC 22E6 F290 507A 4223 User-Agent: Mutt/1.6.1 (2016-04-27) Subject: Re: [TUHS] First ARPAnet transmission X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --wzJLGUyc3ArbnUjN Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Monday, 29 October 2018 at 10:19:43 -0400, Clem Cole wrote: > On Mon, Oct 29, 2018 at 4:01 AM Michael Kj=F6rling > wrote: > >> So 1969-10-30 05:30 UTC? > > I >>think<< it is more likely 06:30 UTC, as IIRC Daylight Saving Time > finished mid-month so I think it would have been UTC+8:00 [not +7:00 which > it would be now]. Yes, correct: $ TZ=3DAmerica/Los_Angeles date -j 196910292230 +%s 5419800 $ TZ=3DUTC date -r -5419800 Thu 30 Oct 1969 06:30:00 UTC > If you want to be be 100% accurate and use UTC, then you would need to > check a precise calendar that had all those details to see how the US had > its clocks set on October 30, 1969. The good news was the transmission > stayed with the same time zone, which as I said was Pacific (UCLA is in L= os > Angeles area and SRI in the Bay Area - but both are California - which > follows US, DST rules). The question is what were the rules that were in > effect that night. That's in the time zone sources: # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule US 1967 2006 - Oct lastSun 2:00 0 S Rule US 2007 max - Nov Sun>=3D1 2:00 0 S So in 1969, DST ended on 26 October. Greg Of course, this didn't happen at *exactly* 22:30/6:30, but presumably nobody at the time thought that people would still be talking about it 50 years later. Greg -- Sent from my desktop computer. Finger grog@lemis.com for PGP public key. See complete headers for address and phone numbers. This message is digitally signed. If your Microsoft mail program reports problems, please read http://lemis.com/broken-MUA --wzJLGUyc3ArbnUjN Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iEYEARECAAYFAlvXl6QACgkQIubykFB6QiPUtgCfU57LPLotC92VpSjM8lJBledg fsUAoJ8FL03PBouutxzl+BkucvJPjqr6 =ypdD -----END PGP SIGNATURE----- --wzJLGUyc3ArbnUjN--