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File:Tz world mp-color.svg

tz deitābeis wa, päkeijen as tzdata en tzcode in Linuks, zoninfo deitābeis ddo, IANA (Internet Assigned Numbers Authority) time zone database, informeiçion dè kolläboreitiv kompaileiçion für storiŋ taimzon en deilait-seiviŋ taim deitā in wörld[2], yusen praimari wiŧ kompyutā progrems en opèreitiŋ sistèms[3] It is sometimes called the Olson database, referring to the founding contributor, Arthur David Olson.[4] Paul Eggert is currently its editor and maintainer.[5]

Its uniform naming convention for time zones, such as America/New_York and Europe/Paris, was designed by Paul Eggert.[6] The database attempts to record historical time zones and all civil changes since 1970, the Unix time epoch.[7] It also includes transitions such as daylight saving time, and also records leap seconds.[8]

The database, as well as some reference source code, is in the public domain.[9] New editions of the database and code are published as changes warrant, usually several times per year.[10]

Deitā strùkcör Edit

Faylformäts Edit

tz deitābeis wa pùblišen as tekstfayles dè set which list the rules and zone transitions in a human-readable format. For use, these text files are compiled into a set of platform-independent binary files—one per time zone. The reference source code includes such a compiler called zic (zone information compiler), as well as code to read those files and use them in standard application programming interfaces such as localtime() and mktime().

Definition of a time zone Edit

Within the tz database, a time zone is any national region where local clocks have all agreed since 1970.[11] This definition concerns itself first with geographic areas which have had consistent local clocks. This is different from other definitions which concern themselves with consistent offsets from a prime meridian. Therefore, each of the time zones defined by the tz database may document multiple offsets from UTC, typically including both standard time and daylight saving time.

In the time zone text files, each time zone has one or more "zone lines" in one of the time zone text files. The first zone line for a time zone gives the name of the time zone; any subsequent zone lines for that time zone leave the name blank, indicating that they apply to the same zone as the previous line. Each zone line for a zone specifies, for a range of date and time, the offset to UTC for standard time, the name of the set of rules that govern daylight saving time (or a hyphen if standard time always applies), the format for time zone abbreviations, and, for all but the last zone line, the date and time at which the range of date and time governed by that line ends.

Daylight saving time (DST) rules Edit

The rules for daylight saving time are specified in named rule sets. Each rule set has one or more rule lines in the time zone text files. A rule line contains the name of the rule set to which it belongs, the first year in which the rule applies, the last year in which the rule applies (or "only" if it applies only in one year or "max" if it is the rule currently in effect), the type of year to which the rule applies ("-" if it applies to all years in the specified range, which is almost always the case, otherwise a name used as an argument to a script that indicates whether the year is of the specified type), the month in which the rule takes effect, the day on which the rule takes effect (which could either be a specific day or a specification such as "the last Sunday of the month"), the time of day at which the rule takes effect, the amount of time to add to the offset to UTC when the rule is in effect, and the letter or letters to use in the time zone abbreviation (for example, "S" if the rule governs standard time and "D" if it governs daylight saving time).

Names of time zones Edit

The time zones have unique names in the form "Area/Location", e.g. "America/New_York". A choice was also made to use English names or equivalents, and to omit punctuation and common suffixes. The underscore character is used in place of spaces. Hyphens are used where they appear in the name of a location. The names have a maximum length of 14 characters.[12]

Area Edit

Area is the name of a continent, an ocean, or "Etc". The continents and oceans currently include: Africa, America, Antarctica, Arctic, Asia, Atlantic, Australia, Europe, Indian, and Pacific.

The oceans are included since some islands are hard to connect to a certain continent. Some are geographically connected to one continent and politically to another. See also Boundaries between continents.

The special area of "Etc" is used for some administrative zones, particularly for "Etc/UTC" which represents Coordinated Universal Time. In order to conform with the POSIX style, those zone names beginning with "Etc/GMT" have their sign reversed from the standard ISO 8601 convention. In the "Etc" area, zones west of GMT have a positive sign and those east have a negative sign in their name (e.g "Etc/GMT-14" is 14 hours ahead/east of GMT.)

Loukeiçion Edit

Location is the name of a specific location within the area – usually a city or small island.

Country names are not used in this scheme, primarily because they would not be robust due to frequent political and boundary changes. The names of large cities tend to be more permanent. However, the database maintainers attempt to include at least one zone for every ISO 3166-1 alpha-2 country code, and a number of user interfaces to the database take advantage of this. Additionally there is a desire to keep locations geographically compact so that any future time zone changes do not split locations into different time zones.[來源請求]

Usually the most populous city in a region is chosen to represent the entire time zone, although other cities may be selected if they are more widely known or result in a less ambiguous name.[來源請求] In the event that the name of a city changes, the convention is to create an alias[來源請求] in future editions so that both the old and new names refer to the same database entry.

In some cases the Location is itself represented as a compound name, for example the time zone "America/Indiana/Indianapolis". Three-level names include those under "America/Argentina/...", "America/Kentucky/...", "America/Indiana/...", and "America/North_Dakota/...".

The location selected is representative for the entire area.

Examples Edit

America/Costa_Rica name of country used because the name of the largest city (and capital city) San José is ambiguous
America/New_York Space replaced with underscore
Asia/Kolkata name of city of Kolkata used, because it was the most populous city in the zone at the time the zone was set up, though this is no longer true[13]
Asia/Sakhalin name of island used, because largest city, Yuzhno-Sakhalinsk, has more than 14 characters
America/Bahia_Banderas name of largest city altered, "de" removed from Bahia de Banderas, because correct name has more than 14 characters
Antarctica/DumontDUrville the apostrophe is removed. The space would normally be replaced with "_", but the name would then exceed 14 characters.

Example zone and rule lines Edit

These are rule lines for the standard United States daylight saving time rules, rule lines for the daylight saving time rules in effect in the US Eastern Time Zone (called "NYC" as New York City is the city representing that zone) in some years, and zone lines for the America/New_York time zone, as of release version tzdata2011n of the time zone database. The zone and rule lines reflect the history of DST in the United States.

# Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER/S
Rule    US      1918    1919    -       Mar     lastSun 2:00    1:00    D
Rule    US      1918    1919    -       Oct     lastSun 2:00    0       S
Rule    US      1942    only    -       Feb     9       2:00    1:00    W # War
Rule    US      1945    only    -       Aug     14      23:00u  1:00    P # Peace
Rule    US      1945    only    -       Sep     30      2:00    0       S
Rule    US      1967    2006    -       Oct     lastSun 2:00    0       S
Rule    US      1967    1973    -       Apr     lastSun 2:00    1:00    D
Rule    US      1974    only    -       Jan     6       2:00    1:00    D
Rule    US      1975    only    -       Feb     23      2:00    1:00    D
Rule    US      1976    1986    -       Apr     lastSun 2:00    1:00    D
Rule    US      1987    2006    -       Apr     Sun>=1  2:00    1:00    D
Rule    US      2007    max     -       Mar     Sun>=8  2:00    1:00    D
Rule    US      2007    max     -       Nov     Sun>=1  2:00    0       S
....
# Rule  NAME    FROM    TO      TYPE    IN      ON      AT      SAVE    LETTER
Rule    NYC     1920    only    -       Mar     lastSun 2:00    1:00    D
Rule    NYC     1920    only    -       Oct     lastSun 2:00    0       S
Rule    NYC     1921    1966    -       Apr     lastSun 2:00    1:00    D
Rule    NYC     1921    1954    -       Sep     lastSun 2:00    0       S
Rule    NYC     1955    1966    -       Oct     lastSun 2:00    0       S
# Zone  NAME            GMTOFF  RULES   FORMAT  [UNTIL]
Zone America/New_York   -4:56:02 -      LMT     1883 Nov 18 12:03:58
                        -5:00   US      E%sT    1920
                        -5:00   NYC     E%sT    1942
                        -5:00   US      E%sT    1946
                        -5:00   NYC     E%sT    1967
                        -5:00   US      E%sT

Data stored for each zone Edit

For each time zone that has multiple offsets (usually due to daylight saving time), the tz database records the exact moment of transition. The format can accommodate changes in the dates and times of transitions as well. Zones may have historical rule changes going back many decades (as shown in the example above).

Zone.tab Edit

The file zone.tab is in the public domain and lists the zones. Columns and row sorting are described in the comments of the file, as follows:

# This file contains a table with the following columns:
# 1.  ISO 3166 2-character country code.  See the file `iso3166.tab'.
# 2.  Latitude and longitude of the zone's principal location
#     in ISO 6709 sign-degrees-minutes-seconds format,
#     either +-DDMM+-DDDMM or +-DDMMSS+-DDDMMSS,
#     first latitude (+ is north), then longitude (+ is east).
# 3.  Zone name used in value of TZ environment variable.
# 4.  Comments; present if and only if the country has multiple rows.
#
 # Columns are separated by a single tab.
# The table is sorted first by country, then an order within the country that
# (1) makes some geographical sense, and
# (2) puts the most populous zones first, where that does not contradict (1).

Data before 1970 Edit

Data before 1970 aims to be correct for the city identifying the region, but is not necessarily correct for the entire region. This is because new regions are created only as required to distinguish clocks since 1970.

For example, between 1963-10-23 and 1963-12-09 in Brazil only the states of Minas Gerais, Espirito Santo, Rio de Janeiro, and São Paulo had summer time. However, a requested split from America/Sao_Paulo was rejected in 2010 with the reasoning that, since 1970, the clocks were the same in the whole region.[14]

Time in Germany, which is represented by Europe/Berlin, is not correct for the year 1945 when the Trizone used different daylight saving time rules than Berlin.[15]

Coverage Edit

Zones covering multiple post-1970 countries Edit

There are two zones that cover an area that was covered by two countries after 1970. The database follows the definitions of countries as per ISO 3166-1, whose predecessor, ISO 3166, was first published in 1974.

Maintenance Edit

The tz reference code and database is maintained by a group of volunteers. Arthur David Olson makes most of the changes to the code, and Paul Eggert to the database. Proposed changes are sent to the tz mailing list, which is gatewayed to the comp.time.tz Usenet newsgroup. Source files are distributed via the IANA FTP server. Typically, these files are taken by a software distributor like Debian, compiled, and then the source and binaries are packaged as part of that distribution. End users can either rely on their software distribution's update procedures, which may entail some delay, or obtain the source directly and build the binary files themselves. A future maintenance plan based on similar principles has been drafted through the IETF.

Unix-like systems Edit

The standard path for the timezone database is /usr/share/zoneinfo/ in Linux distributions, OS X, and some other Unix-like systems.

Usage and extensions Edit

Boundaries of time zones Edit

Geographical boundaries in the form of coordinate sets are not part of the tz database, but boundaries are published by Eric Muller[1] in the form of vector polygons. Using these vector polygons, one can determine, for each place on the globe, the tz database zone in which it is located.

Use in other standards Edit

The Unicode Common Locale Data Repository (CLDR) uses UN/LOCODEs to identify regions.[16] This means all identifiers are referencing a country, something that the creators of the tz database wanted to avoid.[klärifaikeiçion rīkwairen]

Use in software systems Edit

The tz database is used for time zone processing and conversions in many computer software systems, including:

The Olson timezone IDs are also used by the Unicode Common Locale Data Repository (CLDR) and International Components for Unicode (ICU). For example, the CLDR Windows–Tzid table maps Microsoft Windows time zone IDs to the standard Olson names.[24]

History Edit

The project's origins go back to 1986 or earlier.[25]

2011 lawsuit Edit

On September 30, 2011, a lawsuit, Astrolabe, Inc. v. Olson et al., was filed concerning copyright in the database.[26][27] As a result, on October 6, 2011, the database's mailing list and FTP site were shut down.[28] The case revolved around the database maintainers' use of The American Atlas, by Thomas G. Shanks, and The International Atlas, by Thomas G. Shanks and Rique Pottenger. It specifically complained of unauthorised reproduction of atlas data in the timezone mailing list archive and in some auxiliary link collections maintained with the database, though it did not actually point at the database itself. The complaint related only to the compilation of historical timezone data, and did not cover current tzdata world timezone tables.[27][29][30]

This lawsuit was resolved on February 22, 2012 after the involvement of the Electronic Frontier Foundation, when Astrolabe “voluntarily” moved to dismiss the lawsuit without having ever served the defendants and agreed to a covenant not to sue in the future.[31]

Move to ICANNEdit

ICANN took responsibility for the maintenance of the database on October 14, 2011.[32] The full database and a description of current and future plans for its maintenance are available online from IANA.[33]

Ùpdeitiŋs Edit

  • Körrènt vörçion wa: 2016c-0ubuntu0.15.10

Iksikyut 'dpkg-reconfigure tzdata' tu modifai iksistiŋ konfig.

Päkeijs Edit

KomponèntsEdit

tom@bkgovsrv1:~/Dropbox/repository/tz$ zdump --version
zdump (Ubuntu EGLIBC 2.19-0ubuntu6.3) 2.19

tom@bkgovsrv1:~/Dropbox/repository/tz$ zic --version
zic (Ubuntu EGLIBC 2.19-0ubuntu6.3) 2.19

tzdata Edit

Dipendènçi Edit

Folowen päkeijs wa dipend on tzdata:
  • language-pack-en / language-pack-en-base
  • language-pack-gnome-en / language-pack-gnome-en-base
  • language-pack-kde-en / language-pack-kde-en-base
  • language-pack-ja language-pack-ja-base
  • language-pack-gnome-ja language-pack-gnome-ja-base
  • language-pack-kde-ja / language-pack-kde-ja-base
  • language-pack-ko / language-pack-ko-base
  • language-pack-gnome-ko language-pack-gnome-ko-base
  • language-pack-kde-ko / language-pack-kde-ko-base
  • language-pack-vi / language-pack-vi-base
  • language-pack-gnome-vi language-pack-gnome-vi-base
  • language-pack-kde-vi / language-pack-kde-vi-base
  • language-pack-zh / language-pack-zh-base
  • language-pack-gnome-zh language-pack-gnome-zh-base
  • language-pack-kde-zh / language-pack-kde-zh-base
  • laptop-mode-tools
  • locales
  • sun-java6-bin / sun-java6-jre
  • util-linux / util-linux-locales
  • ubuntu-minimal
  • ubuntustudio -desktop
  • powermanagement-interface / acpi-support
WARNING: The following essential packages will be removed.
This should NOT be done unless you know exactly what you are doing!
  • util-linux
  • tzdata (due to util-linux)
0 upgraded, 0 newly installed, 41 to remove and 10 not upgraded.
1 not fully installed or removed.
After this operation, 236MB disk space will be freed.

tzdata-java Edit

tzdata-java is also a package storing time zone and daylight-saving time data, but specifically for use by Java runtimes.

The package contains the data for use by Java runtimes.

Kompaileiçion informeiçion Edit

tom@bkgovsrv1:~/Dropbox/repository/tz$ make
sed \
			-e 's|#!/bin/bash|#!/bin/bash|g' \
			-e 's|AWK=[^}]*|AWK=awk|g' \
			-e 's|\(PKGVERSION\)=.*|\1='\(tzcode) '\|' \
			-e 's|\(REPORT_BUGS_TO\)=.*|\1=tz@iana.org|' \
			-e 's|TZDIR=[^}]*|TZDIR=/usr/local/etc/zoneinfo|' \
			-e 's|\(TZVERSION\)=.*|\1=2014h|' \
			<tzselect.ksh >tzselect
chmod +x tzselect
(echo 'static char const PKGVERSION[]="(tzcode) ";' && \
		 echo 'static char const TZVERSION[]="2014h";' && \
		 echo 'static char const REPORT_BUGS_TO[]="tz@iana.org";') >version.h
cc -DTZDIR=\"/usr/local/etc/zoneinfo\"    -c -o zic.o zic.c
cc -DTZDIR=\"/usr/local/etc/zoneinfo\"    -c -o scheck.o scheck.c
cc -DTZDIR=\"/usr/local/etc/zoneinfo\"    -c -o ialloc.o ialloc.c
cp yearistype.sh yearistype
chmod +x yearistype
cc -DTZDIR=\"/usr/local/etc/zoneinfo\" -o zic   zic.o scheck.o ialloc.o 
cc -DTZDIR=\"/usr/local/etc/zoneinfo\"    -c -o zdump.o zdump.c
cc -DTZDIR=\"/usr/local/etc/zoneinfo\"    -c -o localtime.o localtime.c
cc -DTZDIR=\"/usr/local/etc/zoneinfo\"    -c -o asctime.o asctime.c
cc -DTZDIR=\"/usr/local/etc/zoneinfo\" -o zdump   zdump.o localtime.o asctime.o 
cc -DTZDIR=\"/usr/local/etc/zoneinfo\"    -c -o difftime.o difftime.c
ar ru libtz.a localtime.o asctime.o difftime.o
ar: creating libtz.a
: libtz.a
awk -f leapseconds.awk leap-seconds.list >leapseconds
tom@bkgovsrv1:~/Dropbox/repository/tz$

Babycasèny informeiçion sùpport Edit

Sins 2009n dè 4m 2d, Babycasèny dè sùpport in Linuks wa aveilàbol. Sùpport-wa provaiden ŧru langpack-locales-2.3.18.16a (storen in tzsource dè fouldā).

Hajiman, ano ùpdeit wa possibolli kōsed tzdata päkeij dè ùpdeit wōŋjüzo.

Preparing to replace tzdata 2009b-0ubuntu0.8.04 (using .../tzdata_2009d-0ubuntu0.8.04_all.deb) ...
Unpacking replacement tzdata ...
Setting up tzdata (2009d-0ubuntu0.8.04) ...
dpkg: error processing tzdata (--configure):
subprocess post-installation script returned error exit status 10
Errors were encountered while processing:
tzdata
Log ended: 2009-04-09 23:57:24

Soi, tzdata wa 2009e vörçion provaided.

Jigùm-dè vörçion àveilabol ddo 2014h.

Čeinjs tu päkeij Edit

Čeinjs tu päkeij inklūd:

  • SUPPORTED:
    ädd lain: bb_BK.UTF-8 UTF-8
  • iso-639.def:
    ädd lain: DEFINE_LANGUAGE_CODE ("Babyish", bb,bab, bab)
  • charmaps/:
    ädd fayl: BASKII.gz
  • locales/:
    ädd fayl: bb_BK

See also Edit

References Edit

  1. 1.0 1.1 Muller, Eric (2012-10-08). "A shapefile of the TZ timezones of the world". Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://efele.net/maps/tz/world/. 
  2. http://launchpadlibrarian.net/24923755/tzdata_2009e-1_source.changes
  3. Eggert, Paul; Olson, Arthur David (2007-11-29). "Sources for time zone and daylight saving time data". Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://cs.ucla.edu/~eggert/tz/tz-link.htm. Ritrīven on 2007-12-03. 
  4. Olson, Arthur David (1986-12-16). "Resolved timezone issue? Other issues. New ctime manual page". tz mailing list. 
  5. Eggert, Paul (2005-01-17). "Re: FW: IANA time zone registration – proposal". tz mailing list. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://osdir.com/ml/time.tz/2005-01/msg00027.html. 
  6. Eggert, Paul (1993-10-20). "proposal for time zone names". tz mailing list. 
  7. Olson, Arthur David (1987-03-18). "Re: ist of issues". tz mailing list. 
  8. Devine, Bob (1988-06-02). "leap seconds; [0-60 is ok"]. tz mailing list. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. https://mm.icann.org/pipermail/tz/1988-June/009124.html. 
  9. Eggert, Paul (1995-11-11). "questions and comments on http://tycho.usno.navy.mil/tzones.html". tz mailing list. 
  10. "zoneinfo tzcode and tzdata archives (FTP)". Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. ftp://munnari.oz.au/pub/oldtz/. Ritrīven on 2007-10-30. 
  11. Theory (text file), contained in the "tzcode" distribution. Version tzcode2007h.tar.gz 2007-10-01 referenced.
  12. Olson, Arthur David (2010-05-01). "proposed time zone package changes (Bahia de Banderas; version naming)". gmane.comp.time.tz. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://article.gmane.org/gmane.comp.time.tz/3223. 
  13. Paul Eggert (December 21, 2012). "Re: zoneinfo : ist : error". tz mailing list. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://mm.icann.org/pipermail/tz/2012-December/018487.html. 
  14. Olson, Arthur David (2010-01-06). "RE: little nuance in brazil 1963". tz mailing list. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://article.gmane.org/gmane.comp.time.tz/3061. 
  15. DST and midsummer DST in Germany until 1979, Physikalisch-Technische Bundesanstalt. (2010)
  16. "Unicode Locale Extension (‘u’) for BCP 47". CLDR - Unicode Common Locale Data Repository. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://cldr.unicode.org/index/bcp47-extension. 
  17. "Olson time zone support and setup". AIX 7.1 information. IBM. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://publib.boulder.ibm.com/infocenter/aix/v7r1/index.jsp?topic=/com.ibm.aix.baseadmn/doc/baseadmndita/olson_time_zone.htm. Ritrīven on 2011-03-12. 
  18. "Managing the Time Zone Variable". IBM. 2007-02-02. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. https://www-304.ibm.com/support/docview.wss?q1=tz&dc=DB520&rs=111&uid=isg3T1000252&context=SWG10. Ritrīven on 2011-03-11. 
  19. 19.0 19.1 "AIX O/S updated to support 2007 Daylight Saving Time change". IBM. 2007-10-18. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://www14.software.ibm.com/webapp/set2/sas/f/enews/2006/10/DSTupdate.html. Ritrīven on 2011-03-12. 
  20. "2007 daylight savings [sic time changes for Unix"]. Academic Computing and Communications Center, University of Illinois at Chicago. 2007-02-25. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://www.uic.edu/depts/accc/systems/daylight/unix.html. Ritrīven on 2008-03-18. )
  21. Wickremasinghe, Christopher (2009-03-30). "Introduction of daylight saving time in Western Australia 2006". AIX Wiki. IBM. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://www.ibm.com/developerworks/wikis/display/usergroups/Introduction+of+Daylight+Saving+Time+in+Western+Australia++2006. Ritrīven on 2011-03-11. 
  22. "TZDB library moved to GitHub on April 23, 2014". Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://alex.ciobanu.org/?p=533. Ritrīven on 21 October 2015. 
  23. (June 2004) Oracle Database Globalization Support Guide 10g Release 1 (10.1): Chapter 4, Section "Choosing a Time Zone File". Oracle Corporation, 4–14. Part No. B10749-02. Retrieved on 2007-10-30. 
  24. "Windows → Tzid". Unicode Consortium. 2007-11-12. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://unicode.org/cldr/data/diff/supplemental/windows_tzid.html. Ritrīven on 2008-02-17. 
  25. Olson, Arthur David (1986-11-24). "seismo!elsie!tz ; new versions of time zone stuff". tz mailing list. 
  26. "Astrolabe, Inc. v. Olson et al". 2011-10-06. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://dockets.justia.com/docket/massachusetts/madce/1:2011cv11725/139342/. Ritrīven on 2011-10-06. 
  27. 27.0 27.1 "ASTROLABE, INC., Plaintiff, v. ARTHUR DAVID OLSON and PAUL EGGERT, Defendants." (PDF). 2011-09-30. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://web.mit.edu/jhawk/tmp/tz/gov.uscourts.mad.139342.1.0.pdf. Ritrīven on 2011-10-07. 
  28. Olson, Arthur David (2011-10-06). "Civil suit; ftp shutdown; mailing list shutdown". Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://article.gmane.org/gmane.comp.time.tz/4133. Ritrīven on 2011-10-06. 
  29. "Time zone database shut down". The Daily Parker. 2011-10-06. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://www.thedailyparker.com/PermaLink,guid,c5f28bae-4b9c-41ea-b7b7-8891ad63c938.aspx. Ritrīven on 2011-10-06. 
  30. "Time-zone database – Astrolabe's opinion". Stephen Colebourne's blog. 13 October 2011. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://blog.joda.org/2011/10/time-zone-database-astrolabes-opinion.html. Ritrīven on 26 October 2011. 
  31. "EFF Wins Protection for Time Zone Database". Electronic Frontier Foundation. 22 February 2012. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. https://www.eff.org/press/releases/eff-wins-protection-time-zone-database. Ritrīven on 22 February 2012. 
  32. "ICANN to Manage Time Zone Database". ICANN. 2011-10-15. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://mm.icann.org/pipermail/tz/2011-October/008090.html. Ritrīven on 2011-12-30. 
  33. "Time Zone Database". IANA. Archived from the original. You must specify the date the archive was made using the |archivedate= parameter. http://www.iana.org/time-zones. 
  34. Template:LP

Ikstörnol liŋks Edit

Interwiki-liŋks

JenerolEdit

Official IANA sourcesEdit

Man peijsEdit

Template:Timezones

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