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Timezone Maintainer Retiring

linuxwrangler writes "It's used in Java. It's used in nearly every flavor of UNIX/Linux. In PostgreSQL, Oracle and other databases. Several RFCs refer to it. But where does the timezone database come from? I never gave it much thought but would have assumed that it was under the purview of some standards body somewhere. It's not. Since the inception of the database Arthur David Olson has maintained the database, coordinated the mailing list and volunteers and provided a release platform and now he is retiring. IANA is developing a transition strategy. Jon Udell has an interesting literary appreciation of the timezone database."

24 of 198 comments (clear)

  1. Definition of awesome by BeShaMo · · Score: 5, Insightful

    You know you're awesome when IANA have to develop a transitioning strategy when you retire.

    1. Re:Definition of awesome by Anonymous Coward · · Score: 5, Insightful

      It's posts like this that make me lament only being able to spend one mod point at a time!

    2. Re:Definition of awesome by icebike · · Score: 4, Insightful

      But the other scary part is any random bus could have run over this guy any time in the past, and
      nobody seems to have been prepared for that.

      One wonders how many other situations like this exist, where critical system tools are basically handled by one person, or a tiny group. This is the second time in the last few years where I've been made aware of such a thing. When Reiser went to prison an entire file system essentially died on the vine (yes I still use it on some machines). So apparently it happens more often than we expect.

      The worrisome bit is that we probably don't have any good database of critical component maintainers and their backup maintainers. The guy who maintained that database probably DID get hit by a bus.

      --
      Sig Battery depleted. Reverting to safe mode.
    3. Re:Definition of awesome by FiloEleven · · Score: 4, Funny

      You know you read too much Slashdot when you read "IANA" and your internal parser breaks because it isn't followed by a noun. =(

    4. Re:Definition of awesome by Anonymous Coward · · Score: 4, Informative

      this is 100% bullshit.

      osanna died of a heart attack, and it was rewritten so it would be in c
      rather than pdp assembly.

      http://www.netadmintools.com/html/7roff.man.html

  2. How does the fridge lamp work, really? by Ceriel+Nosforit · · Score: 4, Funny

    ...assumed that it was under the purview of some standards body somewhere. It's not.

    So it was magical server elves all along!

    --
    All rites reversed 2010
    1. Re:How does the fridge lamp work, really? by gstoddart · · Score: 4, Funny

      So it was magical server elves all along!

      No, this was a server wizard. I can only imagine the beard that comes along with this guy.

      Kudos to the wise ones who have kept everything going.

      --
      Lost at C:>. Found at C.
  3. Re:'bout time by MozeeToby · · Score: 4, Funny

    An allusion to what?

  4. So long... by eexaa · · Score: 5, Funny

    ....and thanks for all the zones.

  5. Outstanding by SPrintF · · Score: 4, Insightful

    The "literary appreciation" article is really first rate.

    --

    Honesty. Loyalty. Kindness. Laughter. Generosity. Magic!

  6. bored legislators by magarity · · Score: 4, Insightful

    The database itself is updated approximately twenty times per year, depending on the year, based on information these experts provide to the maintainer.
     
    Governments of the world have too much time on their hands if they average fiddling with local time zones 20 times per year.

    1. Re:bored legislators by vossman77 · · Score: 5, Interesting

      Governments of the world have too much time on their hands if they average fiddling with local time zones 20 times per year.

      You are certainly right about the most recent update, "Mercer County, North Dakota, changed from the mountain time zone to the central time zone." But the changes are not always recent changes. Recent ChangeLog from Fedora 14 Updates:

      * Wed Feb 9 2011 Petr Machata - 2011b-1
      - Upstream 2011b:
          - America/North_Dakota/Beulah: Mercer County, North Dakota, changed
              from the mountain time zone to the central time zone
      * Mon Jan 24 2011 Petr Machata - 2011a-1
      - Upstream 2011a:
          - Updates of historical stamps for Hawaii
      * Tue Nov 9 2010 Petr Machata - 2010o-1
      - Upstream 2010o:
          - Fiji will end DST on March 6, 2011, not March 27, 2011
      * Wed Oct 27 2010 Petr Machata - 2010n-1
      - Upstream 2010m:
          - Hong Kong didn't observe DST in 1977
          - In zone.tab, remove obsolete association of Vostok Station with
              South Magnetic Pole; add association with Lake Vostok
      - Upstream 2010n:
          - Change end of DST in Samoa in 2011 from 2011-04-03 0:00 to
              2011-04-03 1:00
      * Mon Aug 16 2010 Petr Machata - 2010l-2
      - Upstream 2010l:
          - Change Cairo's 2010 reversion to DST from the midnight between
              September 8 and 9 to the midnight between September 9 and 10.
          - Change Gaza's 2010 return to standard time to the midnight between
              August 10 and 11.
          - Bahia de Banderas (Mexican state of Nayarit) changed time zone
              UTC-7 to new time zone UTC-6 on April 4, 2010

    2. Re:bored legislators by nthwaver · · Score: 5, Informative

      It's a surprise the C library that uses these files can manage to keep all the time accounting straight...

      It's not that complicated. They all translate into offsets in seconds. To the computer, I don't live in America/Los_Angeles on 3:47pm Thu March 3, 2011. The computer sees:

      1299196020 (unix time in UTC)
      - 28800 (my zone offset in seconds, using the tz database)
      + 0 (no DST in my zone right now)
      = 1299167220 (local time)

      So the really impressive work has just been in conceptualizing and organizing the database so that a program just needs to lookup two questions: which of the zones am I in, and what is the current offset for that zone?

  7. Other potential hosts/sponsors by plcurechax · · Score: 4, Informative

    I would expect US NIST Time & Frequency division or US Naval Observatory Time department would be more than willing and able to host the zoneinfo database. Otherwise the time-nuts would likely step in and offer their support. A number of them being long time Unix folk, they wouldn't be total strangers to IANA or various national time authorities.

  8. Stupid humans, why do we still need this crap? by wolrahnaes · · Score: 4, Insightful

    No disrespect to the man and the effort that must have gone in to creating this, but from a rational perspective we shouldn't need more than one more update ever. Unfortunately as a population we seem to be far too dumb to handle the idea of moving away from something we've done for a long time to something that makes more sense.

    Here's all we need for a logical, permanent time solution:

    • Eliminate useless crap like Daylight Savings Time. Legal noon and solar noon should have the same offset every day of the year. If you believe that shifting schedules with the seasons has a useful impact, changing your alarm is just as easy as changing your clock. 12 hour clocks should be phased out officially as well, they serve no purpose but confusion.
    • Define a set of purely geographical time zones, equally sized to some chosen chunk of time (likely one hour in keeping with current general practice). Names should be simple and non-political, personally I favor just the standard UTC+/-x:xx format.
    • Geographical time zones should then be assigned to countries based purely on physical location. Where a country crosses a geographical time zone line, it should keep its normal time zone unless it goes significantly in to the next one.
    • Where two or more time zones are in use by a country, they should be assigned over as large of political subdivisions as reasonable. Using the US as an example, I'd mainly ride the state lines unless a state had significant ground in multiple geographical zones, then go to county by county if a state needed to be split.

    I'm sure there are a few odd cases where exceptions to these guidelines would make sense, and I'm not against it in those cases, but the way we handle time zones now is completely irrational.

    --
    I used to get high on life, but I developed a tolerance. Now I need something stronger.
    1. Re:Stupid humans, why do we still need this crap? by nthwaver · · Score: 4, Insightful

      The tz database is meant to keep track of present and historical changes. Your proposed changes would not simplify anything - they'd only make the tz database bigger.

    2. Re:Stupid humans, why do we still need this crap? by Pingmaster · · Score: 5, Insightful

      Let's say you live your life in New York, where the sun is at it's peak at 7am (UTC -5 hours, 12:00pm-5 = 7:00am). You are used to waking up at 2am, having lunch at 7am and going to bed at 6pm. You then travel overseas, where the sun peaks at 1:00pm (UTC +1 hour). Now, instead of setting your watch and waiting for jet lag to run it's course, you now have to re-wire your brain to continuously remember to eat lunch at 1pm, not supper and that bedtime is somewhere around midnight.

      At least with time zones (as fucked up as the current system is), you can travel anywhere, set your clock to the local time and have a general estimation of the day. Wake up at 6-7am, eat lunch at noon, supper at 5 or 6, go to bed around 11. Makes things much easier on our dumb little brains.

    3. Re:Stupid humans, why do we still need this crap? by Anonymous Coward · · Score: 4, Insightful

      maybe i'm just a decadent libertine, but i generally eat when i'm hungry, and sleep when i'm tired

  9. Re:where are the comments? by MrEricSir · · Score: 4, Funny

    We'd leave comments, but it's midnight here. Or at least, that's what my computer clock is telling me all of a sudden.

    --
    There's no -1 for "I don't get it."
  10. Jon Postel by ivoras · · Score: 4, Interesting

    I believe something similar happened when Jon Postel signed off (http://en.wikipedia.org/wiki/Jon_Postel). For a while, he *was* the IANA.

    You know your technology has stopped being a frontier when pioneers like these get replaced by commitees. Globally, it's not necessarily a bad thing, just a sign of times.

    --
    -- Sig down
  11. You know it's an old Sun workstation... by PinchDuck · · Score: 5, Interesting

    under his desk, with a note taped to it that says "DO NOT TURN OFF".

    That time in 1994 when some clod spilled coke on his desk almost brought it down, but TZ Guy was able to dive under his desk with his shirt off to soak up the spill before it started screwing things up...

  12. Better yet by gsgriffin · · Score: 4, Funny

    Wait! How about just moving to UNIX time stamps. " I'll meet you at 1299198176 at the coffee shop...give or take a few thousand."

    --
    jsut athnoer menagiensls ltitle psrhae for you to dcoede. Why do we wtsae our tmie dnoig tihs?
  13. Take a look at the source for this thing by massysett · · Score: 4, Interesting

    I remember looking at the source for this package when I was in New York City to run the marathon. It was held the morning the clocks went back to standard time, and I was wondering if my computer was up to date. I looked at the source of the timezone data package and it was filled with all sorts of gems. For instance

    # From Paul Eggert (2001-03-06):
    # Daylight Saving Time was first suggested as a joke by Benjamin Franklin
    # in his whimsical essay ``An Economical Project for Diminishing the Cost
    # of Light'' published in the Journal de Paris (1784-04-26).
    # Not everyone is happy with the results:

    The comments are very instructive and the rules are all in plain text so I could easily discern that, yes, my system was up to date so that it would switch back to standard time on the first Sunday in November. (I gave up though when I realized that I wasn't sure what my cron daemon would do!)

    On Debian just do apt-get source tzdata.

    Oh, another good place to look for the oddities that are buried in your Unix system is to go to "info date" and follow the "Date input formats" node.

    Our units of temporal measurement, from seconds on up to months,
    are so complicated, asymmetrical and disjunctive so as to make
    coherent mental reckoning in time all but impossible. Indeed, had
    some tyrannical god contrived to enslave our minds to time, to
    make it all but impossible for us to escape subjection to sodden
    routines and unpleasant surprises, he could hardly have done
    better than handing down our present system.

    Great easter eggs in Unix.

  14. True, GP is b*shit... by xded · · Score: 4, Informative

    Mod parent up, since I'm losing that ability to post a better history.

    http://www.freebsd.org/cgi/man.cgi?query=roff&manpath=FreeBSD+8.1-RELEASE&format=html#HISTORY

    Osanna first [roff] version was written in the PDP-11 assembly language and released in 1973. Brian Kernighan joined the roff development by rewriting it in the C programming language. The C version was released in 1975.

    [...]

    After Osanna had died in 1977 by a heart-attack at the age of about 50, Kernighan went on with developing troff. The next milestone was to equip troff with a general interface to support more devices, the intermediate output format and the postprocessor system. This com- pleted the structure of a roff system as it is still in use today [...]