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=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, 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 44d25287 for ; Tue, 30 Oct 2018 01:08:06 +0000 (UTC) Received: by minnie.tuhs.org (Postfix, from userid 112) id A90DCA220F; Tue, 30 Oct 2018 11:08:04 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 6FE73A1FAB; Tue, 30 Oct 2018 11:07:40 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 7182AA1FB3; Tue, 30 Oct 2018 10:08:55 +1000 (AEST) Received: from www.lemis.com (www.lemis.com [208.86.226.86]) by minnie.tuhs.org (Postfix) with ESMTP id 1588AA1FB0 for ; Tue, 30 Oct 2018 10:08:55 +1000 (AEST) Received: from eureka.lemis.com (lemis.com [192.109.197.81]) by www.lemis.com (Postfix) with ESMTP id 17B501B72837; Tue, 30 Oct 2018 00:08:54 +0000 (UTC) Received: by eureka.lemis.com (Postfix, from userid 1004) id CBAD84494B5; Tue, 30 Oct 2018 11:08:52 +1100 (AEDT) Date: Tue, 30 Oct 2018 11:08:52 +1100 From: Greg 'groggy' Lehey To: John Labovitz Message-ID: <20181030000852.GC27974@eureka.lemis.com> References: <20181029021023.GA27974@eureka.lemis.com> <20181029071652.zzauekw6ikpqd4ur@h-174-65.A328.priv.bahnhof.se> <5B2BFC4F-6FAC-4104-9BCC-2D3C5C0B0970@johnlabovitz.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="Izn7cH1Com+I3R9J" Content-Disposition: inline In-Reply-To: <5B2BFC4F-6FAC-4104-9BCC-2D3C5C0B0970@johnlabovitz.com> 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 UNIX Heritage Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --Izn7cH1Com+I3R9J Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Monday, 29 October 2018 at 11:34:50 -0400, John Labovitz wrote: > On Oct 29, 2018, at 10:19 AM, Clem Cole wrote: Ah, damn, you got there first. Thanks for the zdump reference. >> 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]. That said, Nixon [...shutter...] was >> in office and he put the US went on DST in the winter at some point >> due to the oil crisis (but I thought that was a year or so later). >> I remember it all happening at the time - but I can do not put >> precise dates on any of it. > > According to tzdata... > > $ zdump -v America/Los_Angeles | grep 1969 > America/Los_Angeles Sun Apr 27 09:59:59 1969 UTC = Sun Apr 27 01:59:59 1969 PST isdst=0 > America/Los_Angeles Sun Apr 27 10:00:00 1969 UTC = Sun Apr 27 03:00:00 1969 PDT isdst=1 > America/Los_Angeles Sun Oct 26 08:59:59 1969 UTC = Sun Oct 26 01:59:59 1969 PDT isdst=1 > America/Los_Angeles Sun Oct 26 09:00:00 1969 UTC = Sun Oct 26 01:00:00 1969 PST isdst=0 > > ...it appears that DST was *not* in effect on October 30, 1969. > >> A caveat: tzdata???s docs warn that dates before 1970 may not be >> accurate. But because I???m fascinated by the cultural history >> embedded within that database, I downloaded the latest tzdata files >> to check. The relevant rules are in the ???northamerica??? file: > # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER > Rule CA 1948 only - Mar 14 2:01 1:00 D > Rule CA 1949 only - Jan 1 2:00 0 S > Rule CA 1950 1966 - Apr lastSun 1:00 1:00 D > Rule CA 1950 1961 - Sep lastSun 2:00 0 S > Rule CA 1962 1966 - Oct lastSun 2:00 0 S > Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 > -8:00 US P%sT 1946 > -8:00 CA P%sT 1967 > -8:00 US P%sT Yes, but the key here is the US in the last line. That refers to the rules further up (US) that I referred to. 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 --Izn7cH1Com+I3R9J Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iEYEARECAAYFAlvXoRQACgkQIubykFB6QiNUqACZAWUxqoJUL4vVwEDJPc6L5yMN WMgAn3GiAKGBZb/FdccZRK35hd+SE/sd =j2UO -----END PGP SIGNATURE----- --Izn7cH1Com+I3R9J--