[lug] This Saturday: Unix - one gigasecond since the epoch

David Trowbridge jupiter at flatirons.org
Sat Sep 8 20:01:24 MDT 2001


Happy Gigasecond everybody!

-------------------
David Trowbridge
jupiter at flatirons.org
http://jupiter.babylonia.flatirons.org

"Base 8 is just like base 10 really...if you're missing two fingers"
	-Tom Lehrer

On Sat, 8 Sep 2001, Walter Pienciak wrote:

> Also,
>
> clear; perl -le 'BEGIN { print "Time to 1e9:\n"; }sleep 1 while print "\e[1A", 1e9 - time, "s ==> ",  time, "s"'
>
> (I don't claim this one: my friend Michel sent it to me.)
>
> Walter
>
> On Fri, 7 Sep 2001, Neal McBurnett wrote:
>
> > Ahh - the end of the first gigasecond of official Unix kernel
> > time is nigh.  This is the time recorded in all your filesystem
> > timestamps, etc.
> >
> > $ perl -le 'print scalar gmtime 1e9'
> > Sun Sep  9 01:46:40 2001	# UTC
> >
> > $ perl -le 'print scalar localtime(1E9)'
> > Sat Sep  8 19:46:40 2001	# Mountain Daylight Time
> >
> > Also:
> > $ tcl> clock format 1000000000
> >
> > $ echo '0t1000000000=Y' | TZ=UTC adb  # on solaris
> >
> > I hope some python fan will step in here....
> >
> > A google search for
> >    "46:40"  unix epoch
> > has more, including speculation that some silly programmers have
> > relied on time_t being 9 characters long, resulting in a 1Gs bug
> >
> > See also "Critical and Significant Dates":
> >     http://www.merlyn.demon.co.uk/critdate.htm
> >
> > But note that this will be celebrated 1,000,000,023 seconds after the
> > epoch actually began, because Unix time ignores the 23 leap seconds
> > since then....
> >       ftp://maia.usno.navy.mil/ser7/tai-utc.dat
> >
> > This should really be celebrated with a party, irc session,
> > or something.
> >
> > Cheers,
> >
> > Neal McBurnett <neal at bcn.boulder.co.us>
> > http://bcn.boulder.co.us/~neal/      (with GPG/PGP keys)
> > _______________________________________________
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> >
>
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