| IDG | GROUP | IDA | AREA | FORMAL_NAME |
| 00 | UTC | 000 | UTC | Coordinated Universal Time |
| 01 | Asia-East | 047 | China | People's Republic of China |
| 01 | Asia-East | 104 | Hong Kong | Hong Kong |
| 01 | Asia-East | 117 | Japan | Japan |
| 01 | Asia-East | 127 | Korea, North | Democratic People's Republic of Korea |
| 01 | Asia-East | 128 | Korea, South | Republic of Korea |
| 01 | Asia-East | 140 | Macau | Macau |
| 01 | Asia-East | 228 | Taiwan | Taiwan |
| 02 | Asia-South-East | 012 | Ashmore and Cartier Islands | Ashmore and Cartier Islands |
| 02 | Asia-South-East | 035 | Brunei | Brunei Darussalam |
| 02 | Asia-South-East | 039 | Cambodia | Kingdom of Cambodia |
| 02 | Asia-South-East | 048 | Christmas Island | Christmas Island |
| 02 | Asia-South-East | 050 | Cocos (Keeling) Islands | Cocos (Keeling) Islands |
| 02 | Asia-South-East | 109 | Indonesia | Republic of Indonesia |
| 02 | Asia-South-East | 131 | Laos | Lao People's Democratic Republic |
| 02 | Asia-South-East | 144 | Malaysia | Malaysia |
| 02 | Asia-South-East | 163 | Myanmar | Union of Myanmar |
| 02 | Asia-South-East | 185 | Paracel Islands | Paracel Islands |
| 02 | Asia-South-East | 188 | Philippines | Republic of the Philippines |
| 02 | Asia-South-East | 211 | Singapore | Republic of Singapore |
| 02 | Asia-South-East | 219 | Spratly Islands | Spratly Islands |
| 02 | Asia-South-East | 231 | Thailand | Kingdom of Thailand |
| 02 | Asia-South-East | 232 | Timor | The Democratic Republic of Timor-Leste |
| 02 | Asia-South-East | 253 | Viet Nam | Socialist Republic of Viet Nam |
| 03 | Asia-Central | 001 | Afghanistan | Afghanistan |
| 03 | Asia-Central | 019 | Bangladesh | People's Republic of Bangladesh |
| 03 | Asia-Central | 027 | Bhutan | Kingdom of Bhutan |
| 03 | Asia-Central | 033 | British Indian Territory | British Indian Territory |
| 03 | Asia-Central | 108 | India | India |
| 03 | Asia-Central | 145 | Maldives | Republic of Maldives |
| 03 | Asia-Central | 159 | Mongolia | Mongolia |
| 03 | Asia-Central | 167 | Nepal | Kingdom of Nepal |
| 03 | Asia-Central | 180 | Pakistan | Islamic Republic of Pakistan |
| 03 | Asia-Central | 220 | Sri Lanka | Democratic Socialist Republic of Sri Lanka |
| 04 | America-North | 026 | Bermuda | Bermuda |
| 04 | America-North | 041 | Canada | Canada |
| 04 | America-North | 154 | Mexico | United Mexican States |
| 04 | America-North | 201 | Saint Pierre and Miquelon | Saint Pierre and Miquelon |
| 04 | America-North | 247 | United States | United States of America |
| 05 | America-Central | 024 | Belize | Belize |
| 05 | America-Central | 049 | Clipperton Island | Clipperton Island |
| 05 | America-Central | 057 | Costa Rica | Republic of Costa Rica |
| 05 | America-Central | 069 | El Salvador | Republic of El Salvador |
| 05 | America-Central | 096 | Guatemala | Republic of Guatemala |
| 05 | America-Central | 103 | Honduras | Republic of Honduras |
| 05 | America-Central | 172 | Nicaragua | Republic of Nicaragua |
| 05 | America-Central | 183 | Panama | Republic of Panama |
| 06 | America-South | 009 | Argentina | Argentine Republic |
| 06 | America-South | 028 | Bolivia | Republic of Bolivia |
| 06 | America-South | 032 | Brazil | Federative Republic of Brazil |
| 06 | America-South | 046 | Chile | Republic of Chile |
| 06 | America-South | 051 | Colombia | Republic of Colombia |
| 06 | America-South | 067 | Ecuador | Republic of Ecuador |
| 06 | America-South | 076 | Falkland Islands | Falkland Islands |
| 06 | America-South | 080 | French Guiana | French Guiana |
| 06 | America-South | 100 | Guyana | Co-operative Republic of Guyana |
| 06 | America-South | 186 | Paraguay | Republic of Paraguay |
| 06 | America-South | 187 | Peru | Republic of Peru |
| 06 | America-South | 222 | Suriname | Republic of Suriname |
| 06 | America-South | 248 | Uruguay | Oriental Republic of Uruguay |
| 06 | America-South | 252 | Venezuela | Bolivarian Republic of Venezuela |
| 07 | Europe | 005 | Andorra | Principality of Andorra |
| 07 | Europe | 014 | Austria | Republic of Austria |
| 07 | Europe | 023 | Belgium | Kingdom of Belgium |
| 07 | Europe | 062 | Czech Republic | Czech Republic |
| 07 | Europe | 063 | Denmark | Kingdom of Denmark |
| 07 | Europe | 072 | Estonia | Republic of Estonia |
| 07 | Europe | 079 | France | French Republic |
| 07 | Europe | 087 | Germany | Federal Republic of Germany |
| 07 | Europe | 097 | Guernsey | Guernsey |
| 07 | Europe | 106 | Hungary | Republic of Hangary |
| 07 | Europe | 112 | Ireland | Ireland |
| 07 | Europe | 119 | Jersey | Jersey |
| 07 | Europe | 137 | Liechtenstein | Principality of Liechtenstein |
| 07 | Europe | 139 | Luxembourg | Grand Ducky of Luxembourg |
| 07 | Europe | 148 | Man,Isle of | Isle of Man |
| 07 | Europe | 168 | Netherlands | Kingdom of the Netherlands |
| 07 | Europe | 190 | Poland | Republic of Poland |
| 07 | Europe | 191 | Portugal | Portuguese Republic |
| 07 | Europe | 195 | Romania | Romania |
| 07 | Europe | 212 | Slovakia | Slovak Republic |
| 07 | Europe | 226 | Switzerland | Swiss Confederation |
| 07 | Europe | 246 | United Kingdom | United Kingdom of Greate Britain and Nothern Ireland |
| 08 | Europe-North | 075 | Faeroe Island | Faeroe Island |
| 08 | Europe-North | 078 | Finland | Republic of Finland |
| 08 | Europe-North | 178 | Norway | Kingdom of Norway |
| 08 | Europe-North | 225 | Sweden | Kingdom of Sweden |
| 09 | Europe-South | 089 | Gibraltar | Gibraltar |
| 09 | Europe-South | 114 | Italy | Republic of Itay |
| 09 | Europe-South | 147 | Malta | Republic of Malta |
| 09 | Europe-South | 158 | Monaco | Principality of Monaco |
| 09 | Europe-South | 204 | San Marino | Republic of San Marino |
| 09 | Europe-South | 218 | Spain | Spain |
| 09 | Europe-South | 251 | Vatican(Holy See) | State of the City of Vatican |
| 10 | Europe-Valcan | 002 | Albania | Republic of Albania |
| 10 | Europe-Valcan | 029 | Bosnia and Herzegovina | Bosnia and Herzegovina |
| 10 | Europe-Valcan | 036 | Bulgaria | Republic of Bulgaria |
| 10 | Europe-Valcan | 059 | Croatia | Republic of Croatia |
| 10 | Europe-Valcan | 091 | Greece | Hellenic Republic |
| 10 | Europe-Valcan | 132 | Latvia | Republic of Latvia |
| 10 | Europe-Valcan | 138 | Lithuania | Republic of Lithuania |
| 10 | Europe-Valcan | 141 | Macedonia | Former Yugoslav Republic of Macedonia |
| 10 | Europe-Valcan | 208 | Serbia and Montenegro | Serbia and Montenegro |
| 10 | Europe-Valcan | 213 | Slovenia | Republic of Slovenia |
| 11 | Middle-East | 017 | Bahrain | Kingdom of Bahrain |
| 11 | Middle-East | 061 | Cyprus | Republic of Cyprus |
| 11 | Middle-East | 085 | Gaza Strip | Gaza Strip |
| 11 | Middle-East | 110 | Iran | Islamic Republic of Iran |
| 11 | Middle-East | 111 | Iraq | Republic of Iraq |
| 11 | Middle-East | 113 | Israel | State of Israel |
| 11 | Middle-East | 121 | Jordan | Hashemite Kingdom of Jordan |
| 11 | Middle-East | 129 | Kuwait | State of Kuwait |
| 11 | Middle-East | 133 | Lebanon | Republic of Lebanon |
| 11 | Middle-East | 179 | Oman | Saltanate of Oman |
| 11 | Middle-East | 193 | Qatar | State of Qatar |
| 11 | Middle-East | 206 | Saudi Arabia | Kingdom of Saudi Arabia |
| 11 | Middle-East | 227 | Syria | Syrian Arab Republic |
| 11 | Middle-East | 239 | Turkey | Republic of Turkey |
| 11 | Middle-East | 245 | United Arab Emirates | United Arab Emirates |
| 11 | Middle-East | 257 | West Bank | West Bank |
| 11 | Middle-East | 259 | Yemen | Republic of Yemen |
| 12 | Russia-NIS | 010 | Armenia | Republic of Armenia |
| 12 | Russia-NIS | 015 | Azerbaijan | Republic of Azerbaijan |
| 12 | Russia-NIS | 022 | Belarus | Republic of Belarus |
| 12 | Russia-NIS | 086 | Georgia | Georgia |
| 12 | Russia-NIS | 123 | Kazakhstan | Republic of Kazakhstan |
| 12 | Russia-NIS | 130 | Kyrgyzstan | Kyrgyz Republic |
| 12 | Russia-NIS | 157 | Moldova | Republic of Moldova |
| 12 | Russia-NIS | 196 | Russia | Russian Federation |
| 12 | Russia-NIS | 229 | Tajikistan | Republic of Tajikistan |
| 12 | Russia-NIS | 240 | Turkmenistan | Turkmenistan |
| 12 | Russia-NIS | 244 | Ukraine | Ukraine |
| 12 | Russia-NIS | 249 | Uzbekistan | Republic of Uzbekistan |
| 13 | Africa | 003 | Algeria | Democratic and People's Republic of Algeria |
| 13 | Africa | 006 | Angola | Republic of Angola |
| 13 | Africa | 021 | Bassas da India | Bassas da India |
| 13 | Africa | 025 | Benin | Republic of Benin |
| 13 | Africa | 030 | Botswana | Republic of Botswana |
| 13 | Africa | 037 | Burkina Faso | Burkina Faso |
| 13 | Africa | 038 | Burundi | Republic of Burundi |
| 13 | Africa | 040 | Cameroon | Republic of Cameroon |
| 13 | Africa | 042 | Cape Verde | Republic of Cape Verde |
| 13 | Africa | 044 | Central African Republic | Central African Republic |
| 13 | Africa | 045 | Chad | Republic of Chad |
| 13 | Africa | 052 | Comoros | Federal Islamic Republic of Comoros |
| 13 | Africa | 053 | Congo, Democratic Republic of the | Democratic Republic of the Congo |
| 13 | Africa | 054 | Congo, Republic of the | Republic of the Congo |
| 13 | Africa | 058 | Cote d'Ivoire | Republic of Cote d'Ivoire |
| 13 | Africa | 064 | Djibouti | Republic of Djibouti |
| 13 | Africa | 068 | Egypt | Arab Republic of Egypt |
| 13 | Africa | 070 | Equatorial Guinea | Republic of Equatorial Guinea |
| 13 | Africa | 071 | Eritrea | State of Eritrea |
| 13 | Africa | 073 | Ethiopia | Federal Democratic Republic of Ethiopia |
| 13 | Africa | 074 | Europa Island | Europa Island |
| 13 | Africa | 083 | Gabon | Gabonese Republic |
| 13 | Africa | 084 | Gambia, The | Republic of The Gambia |
| 13 | Africa | 088 | Ghana | Republic of Ghana |
| 13 | Africa | 090 | Glorioso Islands | Glorioso Islands |
| 13 | Africa | 098 | Guinea | Republic of Guinea |
| 13 | Africa | 099 | Guinea-Bissau | Republic of Guinea-Bissau |
| 13 | Africa | 122 | Juan de Nova Island | Juan de Nova Island |
| 13 | Africa | 124 | Kenya | Republic of Kenya |
| 13 | Africa | 134 | Lesotho | Kingdom of Lesotho |
| 13 | Africa | 135 | Liberia | Republic of Liberia |
| 13 | Africa | 136 | Libya | Socialist People's Libyan Arab Jamahiriya |
| 13 | Africa | 142 | Madagascar | Republic of Madagascar |
| 13 | Africa | 143 | Malawi | Republic of Malawi |
| 13 | Africa | 146 | Mali | Republic of Mali |
| 13 | Africa | 151 | Mauritania | Islamic Republic of Mauritania |
| 13 | Africa | 152 | Mauritius | Republic of Mauritius |
| 13 | Africa | 153 | Mayotte | Mayotte |
| 13 | Africa | 161 | Morocco | Kingdom of Morocco |
| 13 | Africa | 162 | Mozambique | Republic of Mozambique |
| 13 | Africa | 164 | Namibia | Republic of Namibia |
| 13 | Africa | 173 | Niger | Republic of Niger |
| 13 | Africa | 174 | Nigeria | Federal Republic of Nigeria |
| 13 | Africa | 194 | Reunion | Reunion |
| 13 | Africa | 197 | Rwanda | Republic of Rwanda |
| 13 | Africa | 198 | Saint Helena | Saint Helena |
| 13 | Africa | 205 | Sao Tome and Principe | Democratic Republic of Sao Tome and Principe |
| 13 | Africa | 207 | Senegal | Republic of Senegal |
| 13 | Africa | 209 | Seychelles | Republic of Seychelles |
| 13 | Africa | 210 | Sierra Leone | Republic of Sierra Leone |
| 13 | Africa | 215 | Somalia | Somali Democratic Republic |
| 13 | Africa | 216 | South Africa | Republic of South Africa |
| 13 | Africa | 221 | Sudan | The Republic of the Sudan |
| 13 | Africa | 224 | Swaziland | Kingdom of Swaziland |
| 13 | Africa | 230 | Tanzania | United Republic of Tanzania |
| 13 | Africa | 233 | Togo | Republic of Togo |
| 13 | Africa | 237 | Tromelin Island | Tromelin Island |
| 13 | Africa | 238 | Tunisia | Republic of Tunisia |
| 13 | Africa | 243 | Uganda | Republic of Uganda |
| 13 | Africa | 258 | Western Sahara | Western Sahara |
| 13 | Africa | 260 | Zambia | Republic of Zambia |
| 13 | Africa | 261 | Zimbabwe | Republic of Zimbabwe |
| 14 | Oceania | 004 | American Samoa | American Samoa |
| 14 | Oceania | 013 | Australia | Australia |
| 14 | Oceania | 018 | Baker Island | Baker Island |
| 14 | Oceania | 055 | Cook Islands | Cook Islands |
| 14 | Oceania | 056 | Coral Sea Islands | Coral Sea Islands |
| 14 | Oceania | 077 | Fiji | Republic of the Fiji Islands |
| 14 | Oceania | 081 | French Polynesia | French Polynesia |
| 14 | Oceania | 095 | Guam | Guam |
| 14 | Oceania | 105 | Howland Island | Howland Island |
| 14 | Oceania | 118 | Jarvis Island | Jarvis Island |
| 14 | Oceania | 120 | Johnston Atoll | Johnston Island |
| 14 | Oceania | 125 | Kingman Reef | Kingman Reef |
| 14 | Oceania | 126 | Kiribati | Republic of Kiribati |
| 14 | Oceania | 149 | Marshall Islands | Republic of the Marshall Islands |
| 14 | Oceania | 155 | Micronesia | Federated State of Micronesia |
| 14 | Oceania | 156 | Midway Islands | Midway Islands |
| 14 | Oceania | 165 | Nauru | Republic of Nauru |
| 14 | Oceania | 170 | New Caledonia | New Caledonia |
| 14 | Oceania | 171 | New Zealand | New Zealand |
| 14 | Oceania | 175 | Niue | Niue |
| 14 | Oceania | 176 | Norfolk Island | Norfolk Island |
| 14 | Oceania | 177 | Northern Mariana Islands | Northern Mariana Islands |
| 14 | Oceania | 181 | Palau | Republic of Palau |
| 14 | Oceania | 182 | Palmyra Atoll | Palmyra Atoll |
| 14 | Oceania | 184 | Papua New Guinea | Papua New Guinea |
| 14 | Oceania | 189 | Pitcairn Islands | Pitcairn |
| 14 | Oceania | 203 | Samoa | Independent State of Samoa |
| 14 | Oceania | 214 | Solomon Islands | Solomon Islands |
| 14 | Oceania | 234 | Tokelau | Tokelau |
| 14 | Oceania | 235 | Tonga | Kingdom of Tonga |
| 14 | Oceania | 242 | Tuvalu | Tuvalu |
| 14 | Oceania | 250 | Vanuatu | Republic of Vanuatu |
| 14 | Oceania | 255 | Wake Island | Wake Island |
| 14 | Oceania | 256 | Wallis and Futuna | Wallis and Futuna Islands |
| 15 | Caribean | 007 | Anguilla | Anguilla |
| 15 | Caribean | 008 | Antigua and Barbuda | Antigua and Barbuda |
| 15 | Caribean | 011 | Aruba | Aruba |
| 15 | Caribean | 016 | Bahamas, The | Commonwealth of The Bahamas |
| 15 | Caribean | 020 | Barbados | Barbados |
| 15 | Caribean | 034 | British Virgin Islands | British Virgin Islands |
| 15 | Caribean | 043 | Cayman Islands | Cayman Islands |
| 15 | Caribean | 060 | Cuba | Republic of Cuba |
| 15 | Caribean | 065 | Dominica | Commonwealth of Dominica |
| 15 | Caribean | 066 | Dominican Republic | Dominican Republic |
| 15 | Caribean | 093 | Grenada | Grenada |
| 15 | Caribean | 094 | Guadeloupe | Guadeloupe |
| 15 | Caribean | 101 | Haiti | Republic of Haiti |
| 15 | Caribean | 115 | Jamaica | Jamaica |
| 15 | Caribean | 150 | Martinique | Martinique |
| 15 | Caribean | 160 | Montserrat | Montserrat |
| 15 | Caribean | 166 | Navassa Island | Navassa Island |
| 15 | Caribean | 169 | Netherlands Antilles | Netherlands Antilles |
| 15 | Caribean | 192 | Puerto Rico | Puerto Rico |
| 15 | Caribean | 199 | Saint Kitts and Nevis | Saint Christopher and Nevis |
| 15 | Caribean | 200 | Saint Lucia | Saint Lucia |
| 15 | Caribean | 202 | Saint Vincent and the Grenadines | Saint Vincent and the Grenadines |
| 15 | Caribean | 236 | Trinidad and Tobago | Republic of Trinidad Tobago |
| 15 | Caribean | 241 | Turks and Caicos Islands | Turks and Caicos Islands |
| 15 | Caribean | 254 | Virgin Islands | United States Virgin Islands |
| 16 | Arctic | 092 | Greenland | Greenland |
| 16 | Arctic | 107 | Iceland | Republic of Iceland |
| 16 | Arctic | 116 | Jan Mayen | Jan Mayen Island |
| 16 | Arctic | 223 | Svalbard | Svalbard Island |
| 17 | Antarctic | 031 | Bouvet Island | Bouvet Island |
| 17 | Antarctic | 082 | French Southern and Antarctic Lands | French Southern and Antarctic Lands |
| 17 | Antarctic | 102 | Heard Island and McDonald Islands | Heard Island and McDonald Islands |
| 17 | Antarctic | 217 | South Georgia and the South Sandwich Islands | South Georgia and the South Sandwich Islands |