Best time greyline path between two locations

Grid locator 1 (AA99XX)

Grid locator 2 (AA99XX) or choose a country below

Select a country Afghanistan Agalega & St. Brandon Aland Is. Alaska Albania Algeria American Samoa Amsterdam & St. Paul Andaman & Nicobar Andorra Angola Anguilla Annobon Antarctica Antigua & Barbuda Argentina Armenia Aruba Ascension I. Asiatic Russia Auckland & Campbell Austral Is. Australia Austria Aves I. Azerbaijan Azores Bahamas Bahrain Baker & Howland Is. Balearic Is. Banaba Bangladesh Barbados Bear I. Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bosnia-Herzegovina Botswana Bouvet Brazil British Virgin Is. Brunei Bulgaria Burkina Faso Burundi Cameroon Canada Canary Is. Cape Verde Cayman Is. Central African Rep Central Kiribati Ceuta and Melilla Chad Chagos Is. Chatham Is. Chesterfield Is. Chile China Christmas I. Clipperton I. Cocos I. Cocos-Keeling Colombia Comoros Congo Conway Reef Corsica Costa Rica Cote d'Ivoire Crete Croatia Crozet Cuba Cyprus Czech Republic Denmark Desecheo I. Djibouti Dodecanese Dominica Dominican Republic Ducie I. East Malaysia Easter Island Eastern Kiribati Ecuador Egypt El Salvador England Equatorial Guinea Eritrea Estonia Ethiopia European Russia Falkland Is. Faroe Is. Fernando de Noronha Fiji Finland France Franz Josef Land French Guiana French Polynesia French St. Martin Gabon Galapagos Is. Gambia Georgia Germany Ghana Gibraltar Glorioso Greece Greenland Grenada Guadeloupe Guam Guantanamo Bay Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Hawaii Heard I. Honduras Hong Kong Hungary Iceland India Indonesia Iran Iraq Ireland Isle of Man Israel Italy Italy (Africa) ITU HQ Geneva Jamaica Jan Mayen Japan Jersey Johnston I. Jordan Juan de Nova & Europa Juan Fernandez Is. Kaliningrad Kampuchea Kazakhstan Kenya Kerguelen Kermadec Is. Kingman Reef Kure I. Kuwait Kyrgyzstan Laccadive Is. Laos Latvia Lebanon Lesotho Liberia Libya Liechtenstein Lithuania Lord Howe I. Luxembourg Macau Macedonia Macquarie I. Madagascar Madeira Is. Malawi Maldives Mali Malpelo I. Malta Malyj Vysotskij Mariana Is. Marion I. Market Reef Marquesas Is. Marshall Is. Martinique Mauritania Mauritius Mayotte Mellish Reef Mexico Micronesia Midway I. Minami Torishima Moldova Monaco Mongolia Montenegro Montserrat Morocco Mount Athos Mozambique Myanmar Namibia Nauru Navassa I. Nepal Netherlands Netherlands Antilles New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk I. North Cook Is. North Korea Northern Ireland Norway Ogasawara Oman Pakistan Palau Palestine Palmyra & Jarvis Is. Panama Papua New Guinea Paraguay Peru Peter I I. Philippines Pitcairn I. Poland Portugal Pratas Island Puerto Rico Qatar Rep. of Congo Reunion Revilla Gigedo Rodriguez I. Romania Rotuma Rwanda Sable I. Saint Barthelemy Saint Helena Samoa San Andres/Providencia San Felix I. San Marino Sao Tome & Principe Sardinia Saudi Arabia Scarborough Reef Scotland Senegal Serbia Seychelles Shetland Sicily Sierra Leone Singapore Sint Maarten Slovakia Slovenia Solomon Islands Somalia South Africa South Cook Is. South Georgia South Korea South Orkney South Sandwich South Shetland Sov Mil Order of Malta Spain Spratly Is. Sri Lanka St. Kitts & Nevis St. Lucia St. Paul I. St. Peter & St. Paul St. Pierre & Miquelon St. Vincent Sudan Suriname Svalbard Swains Island Swaziland Sweden Switzerland Syria Taiwan Tajikistan Tanzania Temotu Thailand Timor-Leste Togo Tokelau Tonga Trindade & Martim Vaz Trinidad & Tobago Tristan da Cunha Tromelin Tunisia Turkey Turkey (Europe) Turkmenistan Turks & Caicos Tuvalu Uganda UK Bases on Cyprus Ukraine United Arab Emirates United Nations HQ United States Uruguay Uzbekistan Vanuatu Vatican City Venezuela Vienna Intl Ctr Vietnam Virgin Is. Wake I. Wales Wallis & Futuna Is. West Malaysia Western Kiribati Western Sahara Willis I. Yemen Zambia Zimbabwe Geographic coordinate take from cty.dat

More elevation (6° default is 1°) *

* the Twilight is calculated by default with a sun elevation angle of 1° over or below the horizon.
If the box is checked the calculations are made with a sun elevation angle of 6° over or below the horizon.
See here for more informations.

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