contrib/tzdata: import tzdata 2021a

Merge commit '4cd7e1071de16a7392b0e466287f13e9e6f2081a'

Changes: https://github.com/eggert/tz/blob/2021a/NEWS

(cherry picked from commit 8c5bef2eb24cb191c87712a56a9860d8c29415a0)

Git Hash: 09bdde595dd761fd3499b0b0eb085088b3d3276d
Git Author: philip@FreeBSD.org

MFC: contrib/tzdata: import tzdata 2020e

Changes: https://github.com/eggert/tz/blob/2020e/NEWS

(cherry picked from commit dc505d53dcc15636aea9df8c03298f8c32147fa9)

Git Hash: 57d2cb51419cbd7a92214cc57c2145340946efc7
Git Author: philip@FreeBSD.org

MFC r366529: Import tzdata 2020b

MFC r360240: Import tzdata 2020a

MFC r352238: Import tzdata 2019c

MFC r345524: Import tzdata 2019a

MFC r342613: Import tzdata 2018h
MFC r342644: Import tzdata 2018i

MFC r339503: Import tzdata 2018f

MFC r328055: Import tzdata 2018a
MFC r328318: Import tzdata 2018c

MFC r325059: import tzdata 2017c

MFC r316060:

Import tzdata 2017b

MFC r306853

Import tzdata 2016g

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFV r287019: leapseconds from tzdata2015f.

MFC after: 2 weeks

Undo commit r267455, which was done in the wrong directory.

Vendor import of tzdata2014e changes

Fix historical data for Egypt.
Better prediction for future Egypt / Morocco changes.
Update to Cocos / Cook islands.
Fix historical data for Russia.

Obtained from: ftp://ftp.iana.org/tz/releases/

MFV of 240454, tzdata2012f

- Pacific/Fiji will go into DST from 21 October 2012 till 20 January 2013.
- Fix offset for Pacific/Tokelau.
- Gaza and West Bank had DST from 29 March to 28 September 2012.
- Syria has DST from April till October
- Morocco had DST from April to September 2012 except for 20 July to 20 August.
- Cuba changed to DST from 1 April 2012 only.
- Haiti has DST between 8 March and 1 November in 2012.

Obtained from: ftp://ftp.iana.org/tz/releases/

MFV of 233442, tzdata2012a

- Updates to various locations in Antarctica.
- Armenia will abolish DST this year.
- Not only Samoa has moved to UTC+14, also Fakaofo did.
- There will be a leap second in 30 June 2012.
- Historical updates of 1918 to Canada, Winn, Regina, Edm, Vanc, Creston.
- Chili stays on DST until 28 April 2012
- The Falkland islands will stay on DST this year.

MFV of tzdata2011c, r219409

- No leapsecond in June 2011
- Add and update timezones for America/Juneau, America/Sitka,
America/Metlakatla
- Change of Summer time to Winter time in Chili happens in April
2011, not in March 2011.

MFV of r210716, tzdata2010k

- Daylight Saving Time will not be used in Egypt during Ramadan.
- Proper names for Pacific/Pohnpei and Pacific/Chuuk
- Fix historical information for Finland for 1981 and 1982
- No leap-second for December 2010.
- Fix historical information for Ontario (Canada)

Copy share/zoneinfo to contrib/zoneinfo for the proper split of
contributed data and FreeBSD specific data.

MFV of r195792:

Import of tzdata2009k to head.

- Changes in Mauritius and Bangladesh
- No leapsecond at the end of December 2009

MFV of tzdata2009h:

- Fix coordinates of Africa/Gaborone, Pacific/Noumea, Pacific/Tongatapu,
Europe/Vatican

- Fix URLs (=3D -> = etc)

- Jordan doesn't go at last Friday of March 00:00 but no last
Thursday of March 24:00

- Specifically state license for the data: public domain

MFC after: 1 week

Latest bulletin C from Daniel GAMBIS: no leap at the end of june 2009.

MFV on tzdata2008e:

- Fix dates in 2008/2009 for Africa/Mauritius.
- Leap second notification for the end of 2008.

Approved by: bde (mentor, implicit), des
MFC after: 1 week

MFV of tzdata2008c

- Africa/Morocco will have DST in 2008.
- Asia/Choibalsan should be GMT+08:00.
- Asia/Pakistan will have DST in 2008.

Also set all the svn:eol-style properties to native.

Approved by: bde (mentor, implicit), des
MFC after: 1 week

Revert the change in leapseconds for 31 december 2008, so I can
properly bootstrap the merge history on this module.

Approved by: bde (implicit)

Leapsecond at end of december.

Set magic fbsd:nokeywords property that allows files to bypass
keyword expansion. (file-specific replacement for CVSROOT/exclude)

MFV: tzdata2008a

Notable changes:

- Chilis DST has been extended for 3 weeks.
- No leapsecond in 2008

Approved by: grog@ (mentor)

Still no new leapseconds: Bulletin C-35

MFV: tzdata2007g

PR: conf/115706
Submitted by: edwin@
Approved by: re (bmah@)
Obtained from: ftp://elsie.nci.nih.gov/pub/
MFC after: 1 week

Update with Bulletin C 34 from IERS: Still no leap second.

Approved by: re (hrs)

MFV: tzdata2007f

PR: conf/109418
Requested by: edwin@
Obtained from: Arthur David Olson, ftp://elsie.nci.nih.gov/pub/tzdata2007f.tar.gz
MFC after: 1 week

Update with the latest Bulletin C from IERS.

Merge from vendor branch.

Updates to historic rules only for: part of Alaska, Algeria, Bulgaria,
Colombia, Easter Island, Italy, Malta, Mexico, Mongolia, Montserrat,
Puerto Rico, Poland, Russia, South Korea, Spain, part of North Dakota,
United Kingdom, Uruguay, Uzbekistan

Updates to current and future rules for: Guatemala, Haiti, Honduras,
part of Indiana, Iran, Nicaragua, Palestinian Territories, Sri Lanka,
Tunisia,

Updates to future rules only for: Canada, Thule AFB in Greenland

Merge tzdata2005l update from vendor branch.

MT6: after release
MT5: immediately

Update for Bulletin C number 30:

There will be a leapsecond at the end of 2005.

Approved by: re@

Latest IERS Bulletin C (#29): no leap second on 2005-06-30.

Obtained from: http://hpiers.obspm.fr/eoppc/bul/bulc/bulletinc.dat

MFV tzdata2004e

Users in Brazil and Argentina should run tzsetup(8).

Obtained from: Arthur David Olson
MFC after re approval

MFV: tzdata2003d

Merge from vendor branch.

Except for a comment in zone.tab (about the location of the ISO 3166 table),
we are now using the vendor files verbatim.

Merge tzdata2001d update from vendor branch.

PR: conf/31851
Obtained from: Arthur David Olson and the timezone database maintainers
MFC after: 1 week

Merge tzdata2001b from vendor branch.

Merge from vendor branch.

PR: 17431
Obtained from: ftp://elsie.nci.nih.gov/pub/tzdata2000d.tar.gz

Merge the 1999a revision of the timezone data files. There are a number
of important changes to European and South and Central American countries
which should be back-ported to 3.x.

Obtained from: ftp://elsie.nci.nih.gov/pub/tzdata1999a.tar.gz

s/Lesp/Leap/

Caused by: packet loss to freefall

INTERNATIONAL EARTH ROTATION SERVICE (IERS)
SERVICE INTERNATIONAL DE LA ROTATION TERRESTRE

BUREAU CENTRAL DE L'IERS
OBSERVATOIRE DE PARIS
61, Av. de l'Observatoire 75014 PARIS (France)
Tel. : 33 (0) 1 40 51 22 26
FAX : 33 (0) 1 40 51 22 91
Internet : iers@obspm.fr
Paris, 17 July 1998

Bulletin C 16

To authorities responsible for
the measurement and distribution
of time

UTC TIME STEP
on the 1st of January 1999

A positive leap second will be introduced at the end of December 1998.
The sequence of dates of the UTC second markers will be:

1998 December 31, 23h 59m 59s
1998 December 31, 23h 59m 60s
1999 January 1, 0h 0m 0s

The difference between UTC and the International Atomic Time TAI is:

from 1997 July 1, 0h UTC, to 1999 January 1, 0h UTC : UTC-TAI = - 31s
from 1999 January 1, 0h UTC, until further notice : UTC-TAI = - 32s

Leap seconds can be introduced in UTC at the end of the months of
December or June, depending on the evolution of UT1-TAI. Bulletin C mailed
every six months, either to announce a time step in UTC, or to confirm that
there will be no time step at the next possible date.

Daniel GAMBIS
Director
Central Bureau of IERS

Initial revision