From: Warner Losh <email@example.com> To: Adam Thornton <firstname.lastname@example.org> Cc: Computer Old Farts Followers <email@example.com> Subject: Re: [COFF] What does your "cal" show? (fwd) Date: Wed, 8 Sep 2021 19:47:36 -0600 [thread overview] Message-ID: <CANCZdfqEWRnW4Q_0y8V01PxFynuCWKp8hWGEMg2shxX2rPxreg@mail.gmail.com> (raw) In-Reply-To: <CAP2nic2Em--O6zWZ8eNb-pY_VbvaYkjgX1PHvkC9b2X-qgRgfA@mail.gmail.com> [-- Attachment #1.1: Type: text/plain, Size: 1127 bytes --] On Wed, Sep 8, 2021, 7:34 PM Adam Thornton <firstname.lastname@example.org> wrote: > Just variation of Earth’s rotational speed over time, AFAIK. > > http://leapsecond.com/java/gpsclock.htm -- TAI is SI second ticks, UTC is > corrected to rotation by leap seconds. Currently they are 37 seconds apart. > UTC is also SI seconds with an extra second inserted so celestial mean noon doesn't drift. It's irregular as to when based on the irregular wobble of the earth. Warner Adam > > On Sep 8, 2021, at 6:22 PM, Dave Horsfall <email@example.com> wrote: > > Ah, leap seconds. I work for an observatory. Some things are in TAI and > some are in UTC. At least now I know what to look for when something is 37 > seconds off. > > > Isn't about that the transit of the Moon or something? > > -- Dave_______________________________________________ > COFF mailing list > COFF@minnie.tuhs.org > https://minnie.tuhs.org/cgi-bin/mailman/listinfo/coff > > > _______________________________________________ > COFF mailing list > COFF@minnie.tuhs.org > https://minnie.tuhs.org/cgi-bin/mailman/listinfo/coff > [-- Attachment #1.2: Type: text/html, Size: 2781 bytes --] [-- Attachment #2: Type: text/plain, Size: 141 bytes --] _______________________________________________ COFF mailing list COFF@minnie.tuhs.org https://minnie.tuhs.org/cgi-bin/mailman/listinfo/coff
prev parent reply other threads:[~2021-09-09 1:48 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-09 1:22 Dave Horsfall 2021-09-09 1:34 ` Adam Thornton 2021-09-09 1:47 ` Warner Losh [this message]
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=CANCZdfqEWRnW4Q_0y8V01PxFynuCWKp8hWGEMg2shxX2rPxreg@mail.gmail.com \ --firstname.lastname@example.org \ --email@example.com \ --firstname.lastname@example.org \ --subject='Re: [COFF] What does your "cal" show? (fwd)' \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: link
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).