| Country | Sym. | T.Zone | DST. |
| Afghanistan | AF | 4,5 |
| Albania | AL | 1 | 2 |
| Algeria | DZ | 1 | 2 |
| American Samoa | AS | -11 |
| Andorra | AD | 1 | 2 |
| Angola | AO | 1 |
| Anguilla | AI | -4 |
| Antarctica | AQ | -2 | -3 |
| Antigua & Barbuda | AG | -4 |
| Argentina | AR | -3 |
| Argentina western prov | -4 |
| Armenia | AM | 4 | 5 |
| Aruba | AW | -4 |
| Ascension | 0 |
| Australia Northern Territory | AU | 9,5 |
| Australia Lord Howe Island | AU | 10,5 | 11 |
| Australia New South Wales | AU | 10 | 11 |
| Australia Queensland | AU | 10 |
| Australia Victoria | AU | 10 | 11 |
| Australia Captial Territory | AU | 10 | 11 |
| Australia South | AU | 9,5 | 10,5 |
| Australia Tasmania | AU | 10 | 11 |
| Australia Western | AU | 8 |
| Austria | AT | 1 | 2 |
| Azerbajian | AZ | 3 |
| Azores | PT | -1 | 0 |
| Bahamas | BS | -5 | -4 |
| Bahrain | BH | 3 |
| Balearic Islands | 1 | 2 |
| Bangladesh | BD | 6 |
| Barbados | BB | -4 |
| Belarus | BY | 2 | 3 |
| Belgium | BE | 1 | 2 |
| Belize | BZ | -6 |
| Benin | BJ | 1 |
| Bermuda | BM | -4 | -3 |
| Bhutan | BT | 6 |
| Bolivia | BO | -4 |
| Bonaire | -4 |
| Bosnia Hercegovina | BA | 1 | 2 |
| Botswana | BW | 2 |
| Brazil Acre | BR | -4 | -5 |
| Brazil Atlantic Islands | BR | -1 | -2 |
| Brazil East | BR | -3 | -1 |
| Brazil West | BR | -4 | -3 |
| British Virgin Islands | VG | -4 |
| Brunei | BN | 8 |
| Bulgaria | BG | 2 | 3 |
| Burkina Faso | BF | 0 |
| Burundi | BI | 2 |
| Cambodia | KH | 7 |
| Cameroon | CM | 1 |
| Canada Central | CA | -6 | -5 |
| Canada Eastern | CA | -5 | -4 |
| Canada Mountain | CA | -7 | -6 |
| Canada Yukon & Pacific | CA | -8 | -7 |
| Canada Atlantic | CA | -4 | -3 |
| Canada Newfoundland | CA | -3,5 | -2,5 |
| Canary Islands | ES | 0 | 1 |
| Canton Enderbury Islands | KI | -11 |
| Cape Verde | CV | -1 |
| Caroline Island | 11 |
| Cayman Islands | KY | -5 |
| Central African Rep | CF | 1 |
| Chad | TD | 1 |
| Channel Islands | 0 | 1 |
| Chatham Island | NZ | 12,75 | 13,75 |
| Chile | CL | -4 | -3 |
| China People's Rep | CN | 8 |
| Christmas Islands | CX | -10 |
| Colombia | CO | -5 |
| Congo | CD/CG | 1 |
| Cook Islands | CK | -10 |
| Costa Rica | CR | -6 |
| Cote d'Ivoire | CI | 0 |
| Croatia | HR | 1 | 2 |
| Cuba | CU | -5 | -4 |
| Curacao | -4 |
| Cyprus | CY | 2 | 3 |
| Czech Republic | CZ | 1 | 2 |
| Dahomey | 1 |
| Denmark | DK | 1 | 2 |
| Djibouti | DJ | 3 |
| Dominica | DM | -4 |
| Dominican Republic | DO | -4 |
| Easter Island | CL | -6 | -5 |
| Ecuador | EC | -5 |
| Egypt | EG | 2 | 3 |
| El Salvador | SV | -6 | |
| England | GB | 0 | 1 |
| Equitorial Guinea | GQ | 1 |
| Eritrea | ER | 3 |
| Estonia | EE | 2 | 3 |
| Ethiopia | ET | 3 |
| Falkland Islands | FK | -4 | -3 |
| Faroe Island | FO | 0 | 1 |
| Fiji | FJ | 12 |
| Finland | FI | 2 | 3 |
| France | FR/FX | 1 | 2 |
| French Guiana | GF | -3 |
| French Polynesia | PF | -10 |
| Gabon | GA | 1 |
| Galapagos Islands | EC | -5 |
| Gambia | GM | 0 |
| Gambier Island | PF | -9 |
| Georgia | GE | 4 |
| Germany | DE | 1 | 2 |
| Ghana | GH | 0 |
| Gibraltar | GI | 1 | 2 |
| Greece | GR | 2 | 3 |
| Greenland | GL | -3 | -2 |
| Greenland Thule | GL | -4 | -3 |
| Greenland Scoresbysun | GL | -1 | 0 |
| Grenada | GD | -4 |
| Grenadines | -4 |
| Guadeloupe | GP | -4 |
| Guam | GU | 10 |
| Guatemala | GT | -6 |
| Guinea | GN | 0 |
| Guinea Bissau | GW | - | 0 |
| Guyana | GY | -3 |
| Haiti | HT | -5 | -4 |
| Honduras | HN | -6 |
| Hong kong | CN | 8 |
| Hungary | HU | 1 | 2 |
| Iceland | IS | 0 |
| India | IN | 5,5 |
| Indonesia Central | ID | 8 |
| Indonesia East | ID | 9 |
| Indonesia West | ID | 7 |
| Iran | IR | 3,5 |
| Iraq | IQ | 3 | 4 |
| Ireland Republic of | IE | 0 | 1 |
| Israel | IL | 2 | 3 |
| Italy | IT | 1 | 2 |
| Jamaica | JM | -5 |
| Japan | JP | 9 |
| Johnston Island | UM | -10 |
| Jordan | JO | 2 | 3 |
| Kazakhstan | KZ | 6 | 7 |
| Kenya | KE | 3 |
| Kiribati | KI | 12 |
| Korea Dem Republic of | KR | 9 |
| Korea Republic of | KP | 9 |
| Kusaie | 12 |
| Kuwait | KW | 3 |
| Kwajalein | MH | -12 |
| Kyrgyzstan | 5 | 6 |
| Laos | LA | 7 |
| Latvia | LV | 2 | 3 |
| Lebanon | LB | 2 | 3 |
| Leeward Islands | -4 |
| Lesotho | LS | 2 |
| Liberia | LR | 0 |
| Libya | LY | 2 |
| Lithuania | LT | 2 | 3 |
| Luxembourg | LU | 1 | 2 |
| Macedonia | MK | 1 | 2 |
| Madagascar | MG | 3 |
| Madeira | PT | 0 | 1 |
| Malawi | MW | 2 |
| Malaysia | MY | 8 |
| Maldives | MV | 5 |
| Mali | ML | 0 |
| Mallorca Islands | 1 | 2 |
| Malta | MT | 1 | 2 |
| Mariana Island | 10 |
| Marquesas Islands | PF | -9,5 |
| Marshall Islands | MH | 12 |
| Martinique | MQ | -4 |
| Mauritania | MR | 0 |
| Mauritius | MU | 4 |
| Mayotte | YT | 3 |
| Melilla | ES | 1 | 2 |
| Mexico | MX | -6 |
| Mexico Baja Calif Norte | MX | -8 | -7 |
| Mexico Nayarit | MX | -7 |
| Mexico Sinaloa | MX | -7 |
| Mexico Sonora | MX | -7 |
| Midway Island | UM | -11 |
| Moldova | MD | 2 | 3 |
| Moldovian Rep Pridnestrovye | 2 | 3 |
| Monaco | MC | 1 | 2 |
| Mongolia | MN | 8 |
| Morocco | MA | 0 |
| Mozambique | MZ | 2 |
| Myanmar (Burma) | MM | 6,5 |
| Namibia | NA | 1 | 2 |
| Nauru Republic of | NR | 12 |
| Nepal | NP | 5,75 |
| Netherlands | NL | 1 | 2 |
| Netherlands Antilles | AN | -4 |
| Nevis Montserrat | MS | -4 |
| New Caledonia | NC | 11 |
| New Hebrides | 11 |
| New Zealand | NZ | 12 | 13 |
| Nicaragua | NI | -6 | -5 |
| Niger | NE | 1 |
| Nigeria | NG | 1 |
| Niue Island | NU | -11 |
| Norfolk Island | NF | 11,5 |
| Northern Ireland | GB | 0 | 1 |
| Northern Mariana Islands | MP | 10 |
| Norway | NO | 1 | 2 |
| Oman | OM | 4 |
| Pakistan | PK | 5 |
| Palau | PW | 9 |
| Panama | PA | -5 |
| Papua New Guinea | PG | 10 |
| Paraguay | PY | -4 | -3 |
| Peru | PE | -5 |
| Philippines | PH | 8 |
| Pingelap | 12 |
| Poland | PL | 1 | 2 |
| Ponape Island | FM | 11 |
| Portugal | PT | 1 | 2 |
| Principe Island | 0 |
| Puerto Rico | PR | -4 |
| Qatar | QA | 3 |
| Reunion | RE | 4 |
| Romania | RO | 2 | 3 |
| Russian Fed.zone eight | RU | 9 | 10 |
| Russian Fed.zone eleven | RU | 12 | 13 |
| Russian Fed.zone five | RU | 6 | 7 |
| Russian Fed.zone four | RU | 5 | 6 |
| Russian Fed.zone nine | RU | 10 | 11 |
| Russian Fed.zone one | RU | 2 | 3 |
| Russian Fed.zone seven | RU | 8 | 9 |
| Russian Fed.zone six | RU | 7 | 8 |
| Russian Fed.zone ten | RU | 11 | 12 |
| Russian Fed.zone three | RU | 4 | 5 |
| Russian Fed.zone two | RU | 4 | 5 |
| Rwanda | RW | 2 |
| Saba | MY | -4 |
| Samoa | WS | -11 |
| San Marino | SM | 1 | 2 |
| Sao Tome e Principe | ST | 0 |
| Saudi Arabia | SA | 3 |
| Scotland | 0 | 1 |
| Senegal | SN | 0 |
| Seychelles | SC | 4 |
| Sierra Leone | SL | 0 |
| Singapore | SG | 8 |
| Slovakia | SK | 1 | 2 |
| Slovenia | SI | 1 | 2 |
| Society Island | PF | -10 |
| Solomon Islands | SB | 11 |
| Somalia | SO | 3 |
| South Africa | ZA | 2 |
| Spain | ES | 1 | 2 |
| Sri Lanka | LK | 5,5 |
| St Christopher | -4 |
| St Croix | -4 |
| St Helena | SH | 0 |
| St John | -4 |
| St Kitts Nevis | KN | -4 |
| St Lucia | LC | -4 |
| St Maarten | -4 |
| St Pierre & Miquelon | PM | -3 | -2 |
| St Thomas | -4 |
| St Vincent | VC | -4 |
| Sudan | SD | 2 |
| Suriname | SR | -3 |
| Swaziland | SZ | 2 |
| Sweden | SE | 1 | 2 |
| Switzerland | CH | 1 | 2 |
| Syria | SY | 2 | 3 |
| Tahiti | -10 |
| Taiwan | TW | 8 |
| Tajikistan | TJ | 6 |
| Tanzania | TZ | 3 |
| Thailand | TH | 7 |
| Togo | TG | 0 |
| Tonga | TO | 13 |
| Trinidad and Tobago | TT | -4 |
| Tuamotu Island | -10 |
| Tubuai Island | -10 |
| Tunisia | TN | 1 |
| Turkey | TR | 2 | 3 |
| Turkmenistan | TM | 5 |
| Turks and Caicos Islands | TC | -5 | -4 |
| Tuvalu | TV | 12 |
| Uganda | UG | 3 |
| Ukraine | UA | 2 | 3 |
| United Arab Emirates | AE | 4 |
| United Kingdom | GB | 0 | 1 |
| USA Central | US | -6 | -5 |
| USA Eastern | US | -5 | -4 |
| USA Mountain | US | -7 | -6 |
| USA Arizona | US | -7 |
| USA Indiana East | US | -5 |
| USA Pacific | US | -8 | -7 |
| USA Alaska | US | -9 | -8 |
| USA Aleutian | US | -10 |
| USA Hawaii | US | -10 |
| Uruguay | UY | -3 |
| Uzbekistan | UZ | 5 |
| Vanuatu | VU | 11 | 12 |
| Vatican City | VA | 1 | 2 |
| Venezuela | VE | -4 |
| Vietnam | VN | 7 |
| Virgin Islands (US) | VI | -4 |
| Wake Island | UM | 12 |
| Wales | GB | 0 | 1 |
| Wallis and Futuna Islands | WF | 12 |
| Windward Islands | -4 |
| Yemen | YE | 3 |
| Yugoslavia | YU | 1 | 2 |
| Zaire Kasai | 2 |
| Zaire Kinshasa Mbandaka | CD | 1 |
| Zaire Haut Zaire | 2 |
| Zaire Kivu | 2 |
| Zaire Shaba | 2 |
| Zambia | ZM | 2 |
| Zimbabwe | ZW | 2 |
| Bouvet Island | BV |
| Cocos (Keeling) Islands | CC |
| Western Sahara | EH |
| Micronesia | FM |
| S.Georgia &S.Sandwich Is. | GS |
| Heard Is. & McDonald Is. | HM |
| Bri.Indian Ocean Territory | IO |
| Kirgizstan | KG |
| Comoros | KM |
| Liechtenstein | LI |
| Macao | MO |
| Pitcairn | PN |
| Palestine | PS |
| Svalbard & Jan Mayen | SJ |
| French South. & Antarctic | TF |
| Tokelau | TK |
| East Timor | TP |
| US minor outlying islands | UM |