[tz] [PROPOSED] Guess that Tonga has canceled DST

[Paul Eggert]

(Thanks to David Wade.)
* NEWS, australasia (Tonga): Guess DST has been canceled.
---
 NEWS        |  6 ++++++
 australasia | 14 ++++++++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/NEWS b/NEWS
index 4e98ef7..28b46b8 100644
--- a/NEWS
+++ b/NEWS
@@ -7,6 +7,7 @@ Unreleased, experimental changes
   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.
   A new file tzdata.zi now holds a small text copy of all data.
   The zic input format has been regularized slightly.
@@ -28,6 +29,11 @@ Unreleased, experimental changes
     Atyya and Yahia Abdalla.)  South Sudan is not switching, so
     Africa/Juba is no longer a link to Africa/Khartoum.
 
+    Tonga has likely ended its experiment with DST, and will not
+    adjust its clocks on 2017-11-05.  Although Tonga has not announced
+    whether it will continue to observe DST, the IATA is assuming that
+    it will not.  (Thanks to David Wade.)
+
     Turks & Caicos will switch from -04 all year to -05 with US DST on
     2018-03-11 at 03:00.  This affects UT offsets starting 2018-11-04
     at 02:00.  (Thanks to Steffen Thorsen.)
diff --git a/australasia b/australasia
index ae2cd72..5f7c86d 100644
--- a/australasia
+++ b/australasia
@@ -704,8 +704,8 @@ Rule	Tonga	1999	only	-	Oct	 7	2:00s	1:00	S
 Rule	Tonga	2000	only	-	Mar	19	2:00s	0	-
 Rule	Tonga	2000	2001	-	Nov	Sun>=1	2:00	1:00	S
 Rule	Tonga	2001	2002	-	Jan	lastSun	2:00	0	-
-Rule	Tonga	2016	max	-	Nov	Sun>=1	2:00	1:00	S
-Rule	Tonga	2017	max	-	Jan	Sun>=15	3:00	0	-
+Rule	Tonga	2016	only	-	Nov	Sun>=1	2:00	1:00	S
+Rule	Tonga	2017	only	-	Jan	Sun>=15	3:00	0	-
 # Zone	NAME		GMTOFF	RULES	FORMAT	[UNTIL]
 Zone Pacific/Tongatapu	12:19:20 -	LMT	1901
 			12:20	-	+1220	1941
@@ -1626,6 +1626,7 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # day in 2011.  Assume also that the Samoas follow the US and New
 # Zealand's "ST"/"DT" style of daylight-saving abbreviations.
 
+
 # Tonga
 
 # From Paul Eggert (1996-01-22):
@@ -1720,6 +1721,15 @@ Zone	Pacific/Wallis	12:15:20 -	LMT	1901
 # Assume Tonga will observe DST from the first Sunday in November at 02:00
 # through the third Sunday in January at 03:00, like Fiji, for now.
 
+# From David Wade (2017-10-18):
+# In August government was disolved by the King.  The current prime minister
+# continued in office in care taker mode.  It is easy to see that few
+# decisions will be made until elections 16th November.
+#
+# From Paul Eggert (2017-10-18):
+# For now, guess that DST is discontinued.  That's what the IATA is guessing.
+
+
 # Wake
 
 # From Vernice Anderson, Personal Secretary to Philip Jessup,
-- 
2.13.6