1 files changed, 2 insertions, 91 deletions

diff --git a/tz/backward b/tz/backward
index 7c288e3..7685c74 100644
--- a/tz/backward
+++ b/tz/backward
@@ -4,120 +4,51 @@
 # 2009-05-17 by Arthur David Olson.
 
 # This file provides links from old or merged timezone names to current ones.
-# Many names changed in late 1993, and many merged names moved here
-# in the period from 2013 through 2021.  Several of these names are
+# Many names changed in late 1993.  Several of these names are
 # also present in the file 'backzone', which has data important only
 # for pre-1970 timestamps and so is out of scope for tzdb proper.
 
 # Link	TARGET			LINK-NAME
-Link	Africa/Abidjan		Africa/Accra
-Link	Africa/Nairobi		Africa/Addis_Ababa
-Link	Africa/Nairobi		Africa/Asmara
 Link	Africa/Nairobi		Africa/Asmera
-Link	Africa/Abidjan		Africa/Bamako
-Link	Africa/Lagos		Africa/Bangui
-Link	Africa/Abidjan		Africa/Banjul
-Link	Africa/Maputo		Africa/Blantyre
-Link	Africa/Lagos		Africa/Brazzaville
-Link	Africa/Maputo		Africa/Bujumbura
-Link	Africa/Abidjan		Africa/Conakry
-Link	Africa/Abidjan		Africa/Dakar
-Link	Africa/Nairobi		Africa/Dar_es_Salaam
-Link	Africa/Nairobi		Africa/Djibouti
-Link	Africa/Lagos		Africa/Douala
-Link	Africa/Abidjan		Africa/Freetown
-Link	Africa/Maputo		Africa/Gaborone
-Link	Africa/Maputo		Africa/Harare
-Link	Africa/Nairobi		Africa/Kampala
-Link	Africa/Maputo		Africa/Kigali
-Link	Africa/Lagos		Africa/Kinshasa
-Link	Africa/Lagos		Africa/Libreville
-Link	Africa/Abidjan		Africa/Lome
-Link	Africa/Lagos		Africa/Luanda
-Link	Africa/Maputo		Africa/Lubumbashi
-Link	Africa/Maputo		Africa/Lusaka
-Link	Africa/Lagos		Africa/Malabo
-Link	Africa/Johannesburg	Africa/Maseru
-Link	Africa/Johannesburg	Africa/Mbabane
-Link	Africa/Nairobi		Africa/Mogadishu
-Link	Africa/Lagos		Africa/Niamey
-Link	Africa/Abidjan		Africa/Nouakchott
-Link	Africa/Abidjan		Africa/Ouagadougou
-Link	Africa/Lagos		Africa/Porto-Novo
 Link	Africa/Abidjan		Africa/Timbuktu
-Link	America/Puerto_Rico	America/Anguilla
-Link	America/Puerto_Rico	America/Antigua
 Link	America/Argentina/Catamarca	America/Argentina/ComodRivadavia
-Link	America/Puerto_Rico	America/Aruba
-Link	America/Panama		America/Atikokan
 Link	America/Adak		America/Atka
-Link	America/Puerto_Rico	America/Blanc-Sablon
 Link	America/Argentina/Buenos_Aires	America/Buenos_Aires
 Link	America/Argentina/Catamarca	America/Catamarca
-Link	America/Panama		America/Cayman
 Link	America/Panama		America/Coral_Harbour
 Link	America/Argentina/Cordoba	America/Cordoba
-Link	America/Phoenix		America/Creston
-Link	America/Puerto_Rico	America/Curacao
-Link	America/Puerto_Rico	America/Dominica
 Link	America/Tijuana		America/Ensenada
 Link	America/Indiana/Indianapolis	America/Fort_Wayne
 Link	America/Nuuk		America/Godthab
-Link	America/Puerto_Rico	America/Grenada
-Link	America/Puerto_Rico	America/Guadeloupe
 Link	America/Indiana/Indianapolis	America/Indianapolis
 Link	America/Argentina/Jujuy	America/Jujuy
 Link	America/Indiana/Knox	America/Knox_IN
-Link	America/Puerto_Rico	America/Kralendijk
 Link	America/Kentucky/Louisville	America/Louisville
-Link	America/Puerto_Rico	America/Lower_Princes
-Link	America/Puerto_Rico	America/Marigot
 Link	America/Argentina/Mendoza	America/Mendoza
 Link	America/Toronto		America/Montreal
-Link	America/Puerto_Rico	America/Montserrat
-Link	America/Toronto		America/Nassau
-Link	America/Puerto_Rico	America/Port_of_Spain
 Link	America/Rio_Branco	America/Porto_Acre
 Link	America/Argentina/Cordoba	America/Rosario
 Link	America/Tijuana		America/Santa_Isabel
 Link	America/Denver		America/Shiprock
-Link	America/Puerto_Rico	America/St_Barthelemy
-Link	America/Puerto_Rico	America/St_Kitts
-Link	America/Puerto_Rico	America/St_Lucia
-Link	America/Puerto_Rico	America/St_Thomas
-Link	America/Puerto_Rico	America/St_Vincent
-Link	America/Puerto_Rico	America/Tortola
 Link	America/Puerto_Rico	America/Virgin
-Link	Pacific/Port_Moresby	Antarctica/DumontDUrville
-Link	Pacific/Auckland	Antarctica/McMurdo
 Link	Pacific/Auckland	Antarctica/South_Pole
-Link	Asia/Riyadh		Antarctica/Syowa
-Link	Europe/Oslo		Arctic/Longyearbyen
-Link	Asia/Riyadh		Asia/Aden
 Link	Asia/Ashgabat		Asia/Ashkhabad
-Link	Asia/Qatar		Asia/Bahrain
 Link	Asia/Kolkata		Asia/Calcutta
 Link	Asia/Shanghai		Asia/Chongqing
 Link	Asia/Shanghai		Asia/Chungking
 Link	Asia/Dhaka		Asia/Dacca
 Link	Asia/Shanghai		Asia/Harbin
-Link	Europe/Istanbul		Asia/Istanbul
 Link	Asia/Urumqi		Asia/Kashgar
 Link	Asia/Kathmandu		Asia/Katmandu
-Link	Asia/Riyadh		Asia/Kuwait
 Link	Asia/Macau		Asia/Macao
-Link	Asia/Dubai		Asia/Muscat
-Link	Asia/Bangkok		Asia/Phnom_Penh
 Link	Asia/Yangon		Asia/Rangoon
 Link	Asia/Ho_Chi_Minh	Asia/Saigon
 Link	Asia/Jerusalem		Asia/Tel_Aviv
 Link	Asia/Thimphu		Asia/Thimbu
 Link	Asia/Makassar		Asia/Ujung_Pandang
 Link	Asia/Ulaanbaatar	Asia/Ulan_Bator
-Link	Asia/Bangkok		Asia/Vientiane
 Link	Atlantic/Faroe		Atlantic/Faeroe
-Link	Europe/Berlin		Atlantic/Jan_Mayen
-Link	Africa/Abidjan		Atlantic/St_Helena
+Link	Europe/Oslo		Atlantic/Jan_Mayen
 Link	Australia/Sydney	Australia/ACT
 Link	Australia/Sydney	Australia/Canberra
 Link	Australia/Hobart	Australia/Currie
@@ -152,22 +83,7 @@ Link	Africa/Cairo		Egypt
 Link	Europe/Dublin		Eire
 Link	Etc/UTC			Etc/UCT
 Link	Europe/London		Europe/Belfast
-Link	Europe/Prague		Europe/Bratislava
-Link	Europe/Zurich		Europe/Busingen
-Link	Europe/London		Europe/Guernsey
-Link	Europe/London		Europe/Isle_of_Man
-Link	Europe/London		Europe/Jersey
-Link	Europe/Belgrade		Europe/Ljubljana
-Link	Europe/Helsinki		Europe/Mariehamn
-Link	Asia/Nicosia		Europe/Nicosia
-Link	Europe/Belgrade		Europe/Podgorica
-Link	Europe/Rome		Europe/San_Marino
-Link	Europe/Belgrade		Europe/Sarajevo
-Link	Europe/Belgrade		Europe/Skopje
 Link	Europe/Chisinau		Europe/Tiraspol
-Link	Europe/Zurich		Europe/Vaduz
-Link	Europe/Rome		Europe/Vatican
-Link	Europe/Belgrade		Europe/Zagreb
 Link	Europe/London		GB
 Link	Europe/London		GB-Eire
 Link	Etc/GMT			GMT+0
@@ -176,9 +92,6 @@ Link	Etc/GMT			GMT0
 Link	Etc/GMT			Greenwich
 Link	Asia/Hong_Kong		Hongkong
 Link	Atlantic/Reykjavik	Iceland
-Link	Africa/Nairobi		Indian/Antananarivo
-Link	Africa/Nairobi		Indian/Comoro
-Link	Africa/Nairobi		Indian/Mayotte
 Link	Asia/Tehran		Iran
 Link	Asia/Jerusalem		Israel
 Link	America/Jamaica		Jamaica
@@ -194,9 +107,7 @@ Link	America/Denver		Navajo
 Link	Asia/Shanghai		PRC
 Link	Pacific/Kanton		Pacific/Enderbury
 Link	Pacific/Honolulu	Pacific/Johnston
-Link	Pacific/Pago_Pago	Pacific/Midway
 Link	Pacific/Pohnpei		Pacific/Ponape
-Link	Pacific/Guam		Pacific/Saipan
 Link	Pacific/Pago_Pago	Pacific/Samoa
 Link	Pacific/Chuuk		Pacific/Truk
 Link	Pacific/Chuuk		Pacific/Yap