AM* and PM* Abbreviation(s), Latin phrase, Meaning
Abbreviation(s) Latin phrase Meaning
AM
A.M.
am
a.m.		 Ante Meridiem
Ante Meridian
Latin = "before midday"
 before noon
PM
P.M.
pm
p.m.		 Post Meridiem
Post Meridian
Latin = "after midday"
 after noon
Afternoon
*
  • Terms 12 a.m. and 12 p.m. cause confusion and should not be used as neither the "12 am" nor the "12 pm" designation is technically correct.
  • It advisable to use 12 noon and 12 midnight where clarity is required.
  • To avoid ambiguity, airlines, railroads, and insurance companies use 12:01am for an event beginning the day, 11:59pm for ending it.
Converting from AM / PM to 24 hour clock
12 midnight to 12:59 AM 1:00 AM to 12:59 PM
 1:00 PM to 11:59 PM
subtract 12 hours straight conversion
 add 12 hours:
EXAMPLES:
12 midnight --> 0000
12:13 AM --> 0013
12:59 AM --> 0059
 EXAMPLES:
01:00 AM --> 0100
08:00 AM --> 0800
11:59 AM --> 1159
12 noon --> 1200
12:01 PM --> 1201
12:45 PM --> 1245
12:59 PM --> 1259
 EXAMPLES:
01:00 PM --> 1300
03:30 PM --> 1530
06:00 PM --> 1800
09:00 PM --> 2100
10:30 PM --> 2230
11:05 PM --> 2305
11:59 PM --> 2359


Converting from 24 hour clock to AM / PM
0000 to 0059 0100 to 1159
 1200 to 1259 1300 to 2359
add 12 hours straight conversion to AM
 straight conversion to PM subtract 12 hours
EXAMPLES:
0000 --> 12 midnight
0015 --> 12:15 AM
0030 --> 12:30 AM
0059 --> 12:59 AM
EXAMPLES:
0100 --> 01:00 AM
0300 --> 03:00 AM
0700 --> 07:00 AM
0830 --> 08:30 AM
1000 --> 10:00 AM
1159 --> 11:59 AM
 EXAMPLES:
1200 --> 12 noon
1215 --> 12:15 PM
1230 --> 12:30 PM
1259 --> 12:59 PM
 EXAMPLES:
1300 --> 01:00 PM
1500 --> 03:00 PM
1800 --> 06:00 PM
2030 --> 08:30 PM
2215 --> 10:15 PM
2359 --> 11:59 PM

Note: Read BC and AD and BCE Meaning. Christian calendar concepts.
Sections time zones maps-12h
time zones map for northern Canada, time zones map for northern United States of America, time zones map International Date Line, time zones map for northern USA, time zones map for Alaska, time zones map for Aleutian islands, time zones map for Chukotka Russia, International Date Line time zones map, time zones map for Nome, time zones map for Wrangel island, time zones map for Fairbanks, Beaufort Sea, NT and YT, Canada, Arctic Ocean, Mount McKinley, Alaska, Beaufort Sea, north of Alaska, Arctic Ocean,Chukchi Sea, International Date Line, Chukotka, northeasterly region of Russia time zones map for northern Canada, Greenwich meridian time zones map, time zones map for eastern Canada, time zones map for Greenland, time zones map for Qaanaaq, time zones map for Thule, time zones map for Nuuk, time zones map for western Greenland Greenwich meridian time zones map, time zones map for Iceland, time zones map for Reykjavik, time zones map for Iceland, time zones map for Ittoqqortoormiit, time zones map for Greenland, time zones map for Scoresbysund, time zones map for eastern Greenland, time zones map for northern Norway, time zones map for northern Finland, time zones map for north-west Russia, time zones map for Murmansk, time zones map for Spitsbergen, time zones map for Longyearbyen, time zones map for Svalbard, Gullfoss waterfall, Hvita river, Iceland , Reykjavik, Pingvellir National Park, UNESCO World Heritage, Ittoqqortoormiit, Greenland time zones map for northern Russia, time zones map for northern Siberia, time zones map for northern Siberia, time zones map for northern Russia, time zones map for Franz Josef Land, time zones map for Novaya Zemlya, time zones map for Severnaya Zamlya, time zones map for Khatanga, time zones map for Dikson,time zones map for Dudinka, time zones map for Urengoy, time zones map for Salekhard, time zones map for Vorkuta, time zones map for Norilsk, time zones map for Udachny, time zones map for Archangelsk, time zones map for Ukhta time zone International Date Line, time zones map for Eastern Siberia Russia, time zones map for Far East of Russia, time zones map for Siberia Russia, time zones map for northern Siberia Russia, time zones map for Chukotka Russia, time zones map for New Siberian Russia, time zones map for Yakutsk, time zones map for Sakha, time zones map for Tiksi, time zones map for Mirny, time zones map for Oymyakon, time zones map for Pevek, time zones map for Anadyr, time zones map for Wrangel island time zones map for western Canada, time zones map for western United States of America, time zones map for western USA, time zones map for western Mexico, time zones map for Alaska, time zones map for Aleutian islands, time zones map for Chukotka Russia, International Date Line time zones map, time zones map for British Columbia, Organ Pipe Cactus National Monument, Arizona, Grand Canyon National Park, Arizona , Inferior mirage at Great Salt Lake, Utah, Bonneville Salt Flats, Utah, UTC-8 , Parliament Building, Victoria, British Columbia , Seattle view from the Space Needle, Rainier in the background , Yosemite National Park, California time zones map for Saint Pierre and Miquelon France, time zones map for Greenland, time zones map for Bermuda UK, time zones map for eastern United States of America USA, time zones map for eastern Canada, time zones map for northern Mexico, time zones map for Bahamas, time zones map for Newfoundland, time zones map for Florida, time zones map for New York, time zones map for Texas, time zones map for Ontario, Greenland, UTC-4, Yarmouth, Nova Scotia, Canada, UTC-5, New York Manhattan skyline from New Jersey, Southernmost Point House, Key West, Florida, Niagara Falls, Ontario, Canada and Niagara Falls, New York, UTC-6, Voyageurs National Park, Minnesota, USA's Largest Hockey Stick, Eveleth, Minnesota, UTC-7, Albuquerque International Balloon Fiesta, NM Cumbres and Toltec Scenic Railroad, NM, CO, Devils Tower National Monument time zones map Greenwich meridian, time zones map for western Russia, time zones map for European Russia, time zones map for Finland, time zones map for Norway, time zones map for Sweden, time zones map for Estonia, time zones map for Latvia, time zones map for Liechtenstein, time zones map for Lithuania, time zones map for Belarus, time zones map for Belgium, time zones map for Bosnia and Herzegovina , time zones map for Bulgaria, time zones map for Croatia, time zones map for Cyprus, time zones map for Albania, time zones map for Andorra, time zones map for Europe, time zones map for Austria, time zones map for Czech Republic, time zones map for Denmark, time zones map for France, time zones map for Germany, time zones map for Greece, time zones map for Hungary, time zones map for Ireland, time zones map for Italy, time zones map for Kosovo, time zones map for Luxembourg, time zones map for Macedonia, time zones map for Malta, time zones map for Moldova, time zones map for Monaco, time zones map for Montenegro, time zones map for Netherlands, time zones map for Crimea, time zones map for Poland, time zones map for Portugal, time zones map for Romania, time zones map for Ukraine, time zones map for San Marino, time zones map for Serbia, time zones map for Slovakia, time zones map for Slovenia, time zones map for Spain, time zones map for Sweden, time zones map for Switzerland, time zones map for United Kingdom, time zones map for Vatican City, time zones map for Holy See, time zones map for Turkey, time zones map for Israel, time zones map for Jordan, time zones map for Lebanon, time zones map for Palestine, time zones map for Morocco, time zones map for Algeria, time zones map for Tunisia, time zones map for Libya, time zones map for Egypt, time zones map for Western Sahara, time zones map for Azores, time zones map for Madeira, time zones map for Canary islands, time zones map for Faroe islands, time zones map for Torshavn time zones map for Eastern Siberia Russia, time zones map for Western Siberia Russia, time zones map for west China, time zones map for Mongolia, time zones map for east Urals Russia, time zones map for south Russia, time zones map for Armenia, time zones map for Azerbaijan, time zones map for Afghanistan, time zones map for Georgia, time zones map for east Turkey, time zones map for east Syria, time zones map for Iran, time zones map for Iraq, time zones map for north India, time zones map for Pakistan, time zones map for Kashmir, time zones map for Nepal, time zones map for Bhutan, time zones map for Qatar, time zones map for Kuwait, time zones map for Kazakhstan, time zones map for Kyrgyzstan, time zones map for Turkmenistan, time zones map for Uzbekistan, time zones map for Tajikistan, time zones map for Bahrain time zones map International Date Line, time zones map for Eastern Siberia Russia, time zones map for Far East of Russia, time zones map for Chukotka Russia, time zones map for Kamchatka Russia, time zones map for Kuril islands Russia, time zones map for Komandorkiye islands Russia, time zones map for Aleutian islands USA, time zones map for Sakhalin Russia, time zones map for East Asia, time zones map for Japan, time zones map for South Korea, time zones map for North Korea, time zones map for east China, time zones map for east Mongolia, time zones map for South Korea time zones map for Fiji, time zones map for Tuvalu, time zones map for Tonga, International Date Line, time zones map for French Polynesia, time zones map for Wallis and Futuna, time zones map for Kiribati, time zones map for Gilbert islands, time zones map for Samoa, time zones map for American Samoa, time zones map for Rawaki, time zones map for Phoenix islands, time zones map for Kiritimati, time zones map for Christmas island, time zones map for Line islands, time zones map for Cook Islands, time zones map for Tahiti, time zones map for Tuamotu, time zones map for Marquesas islands, time zones map for Tokelau, time zones map for Hawaiian islands, time zones map for Johnston atoll, time zones map for Niue time zones map for Cuba, time zones map for Bahamas, time zones map for Barbados, time zones map for Dominican Republic, time zones map for Grenada, time zones map for Haiti, time zones map for Antigua and Barbuda, time zones map for Puerto Rico, time zones map for Trinidad and Tobago, time zones map for Jamaica, time zones map for US Virgin Islands,time zones map for Belize, time zones map for Costa Rica, time zones map for Dominica, time zones map for El Salvador, time zones map for Guatemala, time zones map for Honduras, time zones map for Mexico, time zones map for Nicaragua, time zones map for Panama, time zones map for St Kitts and Nevis, time zones map for St. Lucia, time zones map for St Vincent and The Grenadines, time zones map for Anguilla UK, time zones map for Aruba Netherlands, time zones map for Bonaire Netherlands, time zones map for British Virgin Islands UK, time zones map for Cayman Islands UK, time zones map for Curacao Netherlands, time zones map for Guadeloupe France, time zones map for Martinique France, time zones map for Montserrat UK, time zones map for Sint Eustatius Netherlands, time zones map for Sint Maarten Netherlands, time zones map for Turks and Caicos Islands UK, time zones map for Saba Netherlands, time zones map for Saint Barthelemy France, time zones map for Saint Martin France, time zones map for Saint Barts, time zones map for Bolivia, time zones map for Brazil, time zones map for Colombia, time zones map for Ecuador, time zones map for Guyana, time zones map for Peru, time zones map for Suriname,time zones map for Venezuela, time zones map for Galapagos islands, time zones map for French Guiana time zones map for Fernando de Noronha, time zones map for Cabo Verde, time zones map for Western Sahara, time zones map for Algeria, time zones map for Mauritania, time zones map for Senegal, time zones map for Gambia, time zones map for Guinea-Bissau, time zones map for Equatorial Guinea, time zones map for Sierra Leone, time zones map for Liberia, time zones map for Egypt, time zones map for Libya, time zones map for Mali, time zones map for Niger, time zones map for Nigeria, time zones map for Ghana, time zones map for Benin, time zones map for Togo, time zones map for Saint Helena, time zones map for Burkina Faso, time zones map for Angola, time zones map for Burundi, time zones map for Cameroon, time zones map for Chad, time zones map for Central African Republic, time zones map for Republic of the Congo, time zones map for Democratic Republic of Congo, time zones map for Cote d'Ivoire, time zones map for Djibouti, time zones map for Ethiopia, time zones map for Gabon, time zones map for Guinea, time zones map for Kenya, time zones map for Malawi, time zones map for Rwanda, time zones map for Sao Tome and Principe, time zones map for South Sudan, time zones map for Sudan, time zones map for Uganda, time zones map for Tanzania, time zones map for Mozambique, time zones map for Zambia, time zones map for Zimbabwe time zones map for Comoros, time zones map for Mauritius, time zones map for Seychelles, time zones map for Eritrea, time zones map for Kenya, time zones map for Madagascar, time zones map for Somalia, time zones map for Ethiopia, time zones map for Yemen, time zones map for Saudi Arabia, time zones map for Oman, time zones map for United Arab Emirates, time zones map for Pakistan, time zones map for India, time zones map for Maldives, time zones map for Chagos, time zones map for Sri Lanka, time zones map for Socotra, time zones map for Mecca, time zones map for Riyadh, time zones map for Dubai, time zones map for Mumbai, time zones map for Bangalore, time zones map for Calcutta, time zones map for Bangladesh, time zones map for Myanmar, time zones map for Burma, time zones map for Indonesia, time zones map for Singapore, time zones map for Malaysia, time zones map for Thailand, time zones map for Vietnam, time zones map for Laos, time zones map for Cambodia, time zones map for Comoros, time zones map for Mauritius, time zones map for Seychelles, time zones map for Eritrea, time zones map for Kenya, time zones map for Madagascar, time zones map for Somalia, time zones map for Ethiopia, time zones map for Yemen, time zones map for Saudi Arabia, time zones map for Oman, time zones map for United Arab Emirates, time zones map for Pakistan, time zones map for India, time zones map for Maldives, time zones map for Chagos, time zones map for Sri Lanka, time, time zones map for Mecca, time zones map for Riyadh, time zones map for Dubai, time zones map for Mumbai, time zones map for Bangalore, time zones map for Calcutta, time zones map for Bangladesh, time zones map for Burma, time zones map for Indonesia, time zones map for Singapore, time zones map for Malaysia, time zones map for Thailand time zones map for Timor-Leste, time zones map for Philippines, time zones map for Brunei, time zones map for Indonesia, time zones map for Moluccas, time zones map for Sulawesi, time zones map for Bali, time zones map for Denpasar, time zones map for Kalimantan, time zones map for Papua New Guinea, time zones map for West Papua Indonesia, time zones map for Asia, time zones map for northern Australia, time zones map for Cairns, time zones map for Broome, time zones map for Darwin, time zones map for Dili, time zones map for Palau, time zones map for Marshall Islands, time zones map for Majuro, time zones map for Tarawa, time zones map for Kiribati, time zones map for Tuvalu, time zones map for Wallis and Futuna, time zones map for Tonga, time zones map for Fiji, time zones map for Solomon Islands, time zones map for Vanuatu, time zones map for Nauru, time zones map for Northern Mariana Islands USA, time zones map for Guam, time zones map for Koror, time zones map for Micronesia, time zones map for Yap, time zones map for Chuuk, time zones map for Palikir, time zones map for Kosrae, time zones map for Taiwan, time zones map for Macao, time zones map for Hong Kong, time zones map for China, International Date Line time zones map for Chile, time zones map for Argentina, time zones map for Uruguay, time zones map for Paraguay, time zones map for south Brazil, time zones map for Easter Island, time zones map for Rapa Nui, time zones map for Falkland islands, time zones map for islas Malvinas time zones map for South Georgia and South Sandwich Islands, time zones map for Tristan da Cunha, time zones map for Gough Island Goncalo Alvares, time zones map for Namibia, time zones map for South Africa, time zones map for Lesotho, time zones map for Swaziland, time zones map for Botswana, time zones map for Mozambique time zones map for Madagascar, time zones map for Reunion France, time zones map for Crozet islands, time zones map for Kerguelen islands, time zones map for Prince Edward Islands, time zones map for Heard Island and McDonald Islands time zones map for Australia, time zones map for New Caledonia, time zones map for Norfolk island , time zones map for Chatham island, time zones map for Lord Howd, time zones map for New Zealand, time zones map for Tonga, International Date Line, time zones map for Tasmania, time zones map for Kermadec
Regional time zones maps-12h
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