Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switc

Import tzdata2017c from ftp://ftp.iana.org/tz/releases/tzdata2017c.tar.gz

Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
Fiji ends DST 2018-01-14, not 2018-01-21.
Namibia switches from +01/+02 to +02 on 2018-04-01.
Sudan switches from +03 to +02 on 2017-11-01.
Tonga likely switches from +13/+14 to +13 on 2017-11-05.
Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
Some corrections to (mostly ancient) historical data.

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Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time

Import tzdata2016g from ftp://ftp.iana.org/tz/releases/tzdata2016g.tar.gz

Summary of changes in tzdata2016g (2016-09-13 08:56:38 -0700):
Timezone switch in Turkey (summer time becomes standard time)
Transition time corrections for historic timestamps in
America/Los_Angeles
zones using USSR rules in early 20th century
Some (more) time zone abbreviations converted to numeric form
Asia/Rangoon becomes Asia/Yangon (with backward compat link)

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Import tzdata2016b from ftp://ftp.iana.org/tz/releases/tzdata2016b.tar.gz

Summary of changes in tzdata2016b (2016-03-12 17:30:14 -0800):
* New zones Europe/Astrakhan and Europe/Ulyanovsk for Astra

Import tzdata2016b from ftp://ftp.iana.org/tz/releases/tzdata2016b.tar.gz

Summary of changes in tzdata2016b (2016-03-12 17:30:14 -0800):
* New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and
Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on
2016-03-27 at 02:00 local time.
* As a trial of a new system that needs less information to be made up,
the new zones use numeric time zone abbreviations like "+04"
instead of invented abbreviations like "ASTT".
* Haiti will not observe DST in 2016.
* Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00.
* Europe/Chisinau observed DST during 1990, and switched from +04 to
+03 at 1990-05-06 02:00, instead of switching from +03 to +02.
* 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not
KUYT/KUYST.
* tzselect's diagnostics and checking, and checktab.awk's checking,
have been improved.
* tzcode now builds under MinGW.
* tzselect now tests Julian-date TZ settings more accurately.
* Comments in zone tables have been improved.
* tzselect again limits its menu comments so that menus fit on a
24x80 alphanumeric display.
* A new web page tz-how-to.html.
* In the Theory file, the description of possible time zone abbreviations in
tzdata has been cleaned up, as the old description was unclear and
inconsistent.

Summary of changes in tzdata2016a (2016-01-26 23:28:02 -0800):
* America/Cayman will not observe daylight saving this year after all.
* Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00.
* Asia/Tehran now has DST predictions for the year 2038 and later,
to be March 21 00:00 to September 21 00:00.
* America/Metlakatla switched from PST all year to AKST/AKDT on
2015-11-01 at 02:00.
* America/Santa_Isabel has been removed, and replaced with a
backward compatibility link to America/Tijuana.
* Asia/Karachi's two transition times in 2002 were off by a minute.
* Changes affecting documentation and commentary.

Summary of changes in tzdata2015g (2015-10-01 00:39:51 -0700):
* Turkey's 2015 fall-back transition is scheduled for Nov.
* Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time.
* Fiji's 2016 fall-back transition is scheduled for January 17, not 24.
* Fort Nelson, British Columbia will not fall back on 2015-11-01.
* Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00.
* Changes affecting documentation.

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