8 Sep
2022
8 Sep
'22
10:28 p.m.
https://www.timeanddate.com/on-this-day/september/9
``Unix time or Unix epoch, POSIX time or Unix timestamp, is a time system
that measures the number of seconds since midnight UTC of January 1, 1970,
not counting leap seconds. At 01:46:40 UTC on September 9, 2001, Unix time
reached the billionth second timestamp.''
Hard to believe that it was that long ago...
-- Dave
8 Sep
8 Sep
11:48 p.m.
There was a delightful conference in Copenhagen celebrating that event, and
I was lucky enough to attend. The slides of my talk live here:
http://herpolhode.com/rob/ugly.pdf
I flew back the next day, September 10, 2011, and it was a beautiful clear
night with a stunning view of the city. We sat in the last row of the
plane, and had an unobstructed view of the trade towers as we landed near
midnight. We went home, fell asleep, and were woken by a phone call about
9am.
-rob
On Fri, Sep 9, 2022 at 8:29 AM Dave Horsfall <dave(a)horsfall.org> wrote:
https://www.timeanddate.com/on-this-day/september/9
``Unix time or Unix epoch, POSIX time or Unix timestamp, is a time system
that measures the number of seconds since midnight UTC of January 1,
1970,
not counting leap seconds. At 01:46:40 UTC on September 9, 2001, Unix
time
reached the billionth second timestamp.''
Hard to believe that it was that long ago...
-- Dave
9 Sep
9 Sep
12:11 a.m.
On Thu, Sep 8, 2022, 7:50 PM Rob Pike <robpike(a)gmail.com> wrote:
There was a delightful conference in Copenhagen
celebrating that event,
and I was lucky enough to attend. The slides of my talk live here:
http://herpolhode.com/rob/ugly.pdf
I flew back the next day, September 10, 2011, and it was a beautiful clear
night with a stunning view of the city. We sat in the last row of the
plane, and had an unobstructed view of the trade towers as we landed near
midnight. We went home, fell asleep, and were woken by a phone call about
9am.
You probably flew approximately over me. I was working late that night in
downtown Manhattan, a few blocks from the WTC, trying to get a demo working
on a Compaq iPaq running Plan 9 in preparation for a trade show in San
Diego a day or two later. That, of course, never happened.
- Dan C.
-rob
On Fri, Sep 9, 2022 at 8:29 AM Dave Horsfall <dave(a)horsfall.org> wrote:
https://www.timeanddate.com/on-this-day/september/9
``Unix time or Unix epoch, POSIX time or Unix timestamp, is a time system
that measures the number of seconds since midnight UTC of January 1,
1970,
not counting leap seconds. At 01:46:40 UTC on September 9, 2001, Unix
time
reached the billionth second timestamp.''
Hard to believe that it was that long ago...
-- Dave
4:24 a.m.
Oops, 2001 of course, but you knew that from multiple contextual clues.
-rob
On Fri, Sep 9, 2022 at 9:48 AM Rob Pike <robpike(a)gmail.com> wrote:
There was a delightful conference in Copenhagen
celebrating that event,
and I was lucky enough to attend. The slides of my talk live here:
http://herpolhode.com/rob/ugly.pdf
I flew back the next day, September 10, 2011, and it was a beautiful clear
night with a stunning view of the city. We sat in the last row of the
plane, and had an unobstructed view of the trade towers as we landed near
midnight. We went home, fell asleep, and were woken by a phone call about
9am.
-rob
On Fri, Sep 9, 2022 at 8:29 AM Dave Horsfall <dave(a)horsfall.org> wrote:
https://www.timeanddate.com/on-this-day/september/9
``Unix time or Unix epoch, POSIX time or Unix timestamp, is a time system
that measures the number of seconds since midnight UTC of January 1,
1970,
not counting leap seconds. At 01:46:40 UTC on September 9, 2001, Unix
time
reached the billionth second timestamp.''
Hard to believe that it was that long ago...
-- Dave
11 Sep
11 Sep
12:09 a.m.
On Fri, 9 Sep 2022, Rob Pike wrote:
There was a delightful conference in Copenhagen
celebrating that event,
and I was lucky enough to attend. The slides of my talk live
here: http://herpolhode.com/rob/ugly.pdf
I flew back the next day, September 10, 2011, and it was a beautiful
clear night with a stunning view of the city. We sat in the last row of
the plane, and had an unobstructed view of the trade towers as we landed
near midnight. We went home, fell asleep, and were woken by a phone call
about 9am.
Cripes... I remember it well.
-- Dave
9 Sep
9 Sep
3:29 a.m.
On Thu, Sep 8, 2022, at 3:28 PM, Dave Horsfall wrote:
https://www.timeanddate.com/on-this-day/september/9
``Unix time or Unix epoch, POSIX time or Unix timestamp, is a time system
that measures the number of seconds since midnight UTC of January 1, 1970,
not counting leap seconds. At 01:46:40 UTC on September 9, 2001, Unix time
reached the billionth second timestamp.''
I remember this event vividly because at work we had an important system fail.
There was a database that was storing the time into a VARCHAR column. Unfortunately, we
were sorting on that column and using the table as a queue so we could always be sure to
pick up the most recent entries and act on them.
Well, you can imagine what happened when the leading digit changed from an ASCII
"9" to an ASCII "1". Oops.
-Seth
--
Seth Morabito
Poulsbo, WA
web(a)loomcom.com
7:03 a.m.
On 8 Sep 2022 20:29 -0700, from web(a)loomcom.com (Seth Morabito):
Well, you can imagine what happened when the leading
digit changed
from an ASCII "9" to an ASCII "1". Oops.
Let me guess. Something very similar to what happened to Microsoft
Exchange servers when the first two digits in a 32-bit signed integer
representation of the current date and time (formatted as YYMMDDHHMM)
changed from "21" to "22" as the date became January 1, 2022.
For those who don't immediately realize why that's a snafu: what is
the value of (2^31)-1 when interpreted as a string representation of a
timestamp according to that format, and how does that relate to Jan 1
2022?
--
Michael Kjörling • https://michael.kjorling.se • michael(a)kjorling.se
“Remember when, on the Internet, nobody cared that you were a dog?”
593
days inactive
596
days old
6 comments
5 participants
participants (5)
-
Dan Cross -
Dave Horsfall -
Michael Kjörling -
Rob Pike -
Seth Morabito