From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 10759 invoked from network); 9 Sep 2022 17:17:12 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 9 Sep 2022 17:17:12 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 66C41422B0; Sat, 10 Sep 2022 03:16:35 +1000 (AEST) Received: from gateway3.unifiedlayer.com (gateway3.unifiedlayer.com [69.89.27.142]) by minnie.tuhs.org (Postfix) with ESMTPS id CA6CE422A7 for ; Sat, 10 Sep 2022 03:16:30 +1000 (AEST) Received: from cm3.websitewelcome.com (unknown [108.167.139.23]) by gateway3.unifiedlayer.com (Postfix) with ESMTP id 0B4A7200A8013 for ; Fri, 9 Sep 2022 12:16:30 -0500 (CDT) Received: from dallas136.arvixeshared.com ([23.91.70.4]) by cmsmtp with ESMTP id WhcDoAZC8AUFjWhcDoF99k; Fri, 09 Sep 2022 12:16:29 -0500 X-Authority-Reason: nr=8 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=humeweb.com ; s=default; h=To:References:Message-Id:Content-Transfer-Encoding:Cc:Date: In-Reply-To:From:Subject:Mime-Version:Content-Type:Sender:Reply-To:Content-ID :Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To: Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe :List-Post:List-Owner:List-Archive; bh=v9nhqrfR5pYVMwETI13qxFyS4SgDpw4L1hW6Qr8GbmA=; b=khOj8kqrKE2V8imWcqFDCmERGQ wOsQ2UJRJ78SSHTmn2TSJ70R5oNNKIt8BZy2ftMzVN27wsH01crXKl/aO8aUjTn7/lEVZlVz9abIH hYybJRfCgki3VJU/mY8cvXyzS89tcQcZY0drnsDTGQoAVNsgMl5cHjD2T0xwwdl48Uh4=; Received: from 99-98-248-85.lightspeed.irvnca.sbcglobal.net ([99.98.248.85]:63391 helo=smtpclient.apple) by dallas136.arvixeshared.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1oWhcD-003OA0-JE; Fri, 09 Sep 2022 12:16:29 -0500 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3696.120.41.1.1\)) From: Andrew Hume In-Reply-To: Date: Fri, 9 Sep 2022 10:16:28 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: References: To: Douglas McIlroy X-Mailer: Apple Mail (2.3696.120.41.1.1) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - dallas136.arvixeshared.com X-AntiAbuse: Original Domain - tuhs.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - humeweb.com X-BWhitelist: no X-Source-IP: 99.98.248.85 X-Source-L: No X-Exim-ID: 1oWhcD-003OA0-JE X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 99-98-248-85.lightspeed.irvnca.sbcglobal.net (smtpclient.apple) [99.98.248.85]:63391 X-Source-Auth: andrew@humeweb.com X-Email-Count: 2 X-Source-Cap: YWh1bWU7YWh1bWU7ZGFsbGFzMTM2LmFydml4ZXNoYXJlZC5jb20= X-Local-Domain: yes Message-ID-Hash: CVGP2LN3FNQXKUW7T7QH44LF3N7Q4AYP X-Message-ID-Hash: CVGP2LN3FNQXKUW7T7QH44LF3N7Q4AYP X-MailFrom: andrew@humeweb.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: TUHS main list X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Happy birthday, Unix timestamp! List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: if i recall correctly, V1 of Unix had time measured in milliseconds. were folks that sure that this would change before wrap-around? > On Sep 9, 2022, at 5:06 AM, Douglas McIlroy = wrote: >=20 >> Well, you can imagine what happened when the leading digit changed >> from an ASCII "9" to an ASCII "1". Oops. >=20 > I first saw a time-overflow bug more than 60 years ago. Accounting > went haywire in the Bell Labs' comp center on day 256 of the year, > when the encoded output of a new time clock reached the sign bit. >=20 > Doug