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| C E N T E R F O R T H E I N T E G R A T I V E S T U D Y O F A N I M A L B E H A V I O R |
| TIME ZONE ABBREVIATIONS . TIME ZONE MAP (PDF, 990K) . MORE CONVERSIONS . RESEARCH HELP |
| WORLD TIME ZONE ABBREVIATIONS |
UTC (Universal Time Coordinated) defines the universal time zone, to which all the other time zones are relative. UTC is the same as Greenwich Mean Time (GMT). It observes no Daylight Saving Time (summer time). UT (Universal Time) is based on the Earth's rotation, and often used in Astronomy. TAI (International Atomic Time) is based on atomic clocks. The military of many nations refer to time zones as letters, for example: Z (Zulu) = Zero Meridian (UTC or GMT). The other letters / words for different timezones are listed below. A to M moves eastwards and N to Y moves westwards. The letter J is skipped because J (Juliet) refers to current local time of the observer. The International Date Line (the place where a new day / 24 hours starts / ends) is between time zones M and Y. Time zone common names are also listed, with examples of citys, countries, areas included in each time zone. |
| CODE | WORD | UTC/GMT OFFSET | NAME | INCLUDES |
| Y | Yankee | UTC -12 hours | IDLW International Date Line West | Pacific Ocean nations |
| X | Xray | UTC -11 hours | NT Nome | Pacific Ocean nations |
| W | Whisky | UTC -10 hours | HST Hawaiian Standard Time | Hawaii |
| V | Victor | UTC -9 hours | AKST Alaska Standard Time | Alaska, Yukon |
| U | Uniform | UTC -8 hours | PST Pacific Standard Time | Pacific USA, British Columbia |
| T | Tango | UTC -7 hours | MST Mountain Standard Time | Mountain USA, Alberta |
| S | Sierra | UTC -6 hours | CST Central Standard Time | Central USA, Saskatchewan, Manitoba, Central America |
| R | Romeo | UTC -5 hours | EST Eastern Standard Time | Eastern USA, Ontario, Quebec |
| Q | Quebec | UTC -4 hours | AST Atlantic Standard Time | Labrador, New Brunswick, Nova Scotia, Caracas, La Paz |
| P | Papa | UTC -3 hours | | Greenland, Brasilia, Buenos Aires, Georgetown (Guyana) |
| O | Oscar | UTC -2 hours | AT Azores | Azores |
| N | November | UTC -1 hour | WAT West Africa | Cape Verdes Islands, Atlantic Ocean |
| Z | Zulu | same as UTC | GMT Greenwich Mean Time | Britain, Ireland, Portugal, Reykjavik (Iceland), Western Africa |
| A | Alpha | UTC +1 hour | CET Central Europe Time | Western Europe, Algeria, Nigeria, Angola |
| B | Bravo | UTC +2 hours | EET Eastern Europe Time | Finland, Eastern Europe, Balkans, Libya, Egypt, South Africa |
| C | Charlie | UTC +3 hours | MSK Moscow Time | Moscow, Baghdad, Eastern Africa, Ethiopia, Kenya, Tanzania |
| D | Delta | UTC +4 hours | ZP4 Russia Zone 3 | Samara (Russia) |
| E | Echo | UTC +5 hours | ZP5 Russia Zone 4 | Yekaterinburg (Russia) |
| F | Foxtrot | UTC +6 hours | ZP6 Russia Zone 5 | Omsk (Russia), Bangladesh |
| G | Golf | UTC +7 hours | WAST West Australian Standard | Krasnoyarsk (Russia, Zone 6), Western Indonesia |
| H | Hotel | UTC +8 hours | WST Western Standard Time | Western Australia, Irkutsk (Russia, Zone 7), China, Hong Kong, Philippines, Central Indonesia |
| I | India | UTC +9 hours | JST Japan Standard Time | Japan, Yakutsk (Russia, Zone 8), Korea, Eastern Indonesia |
| K | Kilo | UTC +10 hours | AEST Australian Eastern Standard | Eastern Australia, Vladivostok (Russia, Zone 9), Papua New Guinea |
| L | Lima | UTC +11 hours | | Magadan (Russia) |
| M | Mike | UTC +12 hours | NZST New Zealand Standard IDLE International Date Line East | Kamchatka (Russia), Fiji, New Zealand, Marshall Islands |
| ADJUSTING FOR DAYLIGHT SAVING TIME |
Daylight Saving Time (or Summer Time) is a modification of standard time by advancing clocks by one hour during the summer. This change makes the sunset and sunrise one hour later than during normal time. The purpose of this alteration is so that people can enjoy more daylight in the evening hours (and save power needed for artificial lighting after dark). Clocks are adjusted one hour ahead when DST begins in the spring, and moved one hour back to standard time in the autumn (an easy way to remember this is "spring ahead, fall back"). So during the months of March or April through September or October, countries in the northern hemisphere may observe DST. During the months of September or October through March or April, countries in the southern hemisphere may observe DST. Some countries / states observe Daylight Saving Time and others do not. The chart below will help you adjust for Daylight Saving Time. Read more about Daylight Saving Time. |
| UNITED STATES & CANADA | DAYLIGHT SAVING TIME |
| |
ADT Atlantic Daylight Saving Time (GMT -3 hours) |
| AST Atlantic Standard Time (GMT -4 hours) | EDT Eastern Daylight Saving Time (GMT -4 hours) |
| EST Eastern Standard Time (GMT -5 hours) | CDT Central Daylight Saving Time (GMT -5 hours) |
| CST Central Standard Time (GMT -6 hours) | MDT Mountain Daylight Saving Time (GMT -6 hours) |
| MST Mountain Standard Time (GMT -7 hours) | PDT Pacific Daylight Saving Time (GMT -7 hours) |
| PST Pacific Standard Time (GMT -8 hours) | AKDT Alaska Daylight Saving Time (GMT -8 hours) |
| AKST Alaska Standard Time (GMT -9 hours) | |
| HST Hawaiian Standard Time (GMT -10 hours) | Hawaii doesn't adjust for Daylight Saving |
| EUROPE | DAYLIGHT SAVING TIME |
| CET Central Europe Time (GMT +1 hour) | BST British Summer Time (GMT +1 hour) IST Irish Summer Time (GMT +1 hour) WEST Western Europe Summer Time (GMT +1 hour) |
| EET Eastern Europe Time (GMT +2 hours) | CEST Central Europe Summer Time (GMT +2 hours) |
| MSK Moscow Time (GMT +3 hours) | EEST Eastern Europe Summer Time (GMT +3 hours) |
| |
MSD Moscow Summer Time (GMT +4 hours) |
| AUSTRALIA | DAYLIGHT SAVING TIME |
| AEST Australian Eastern Standard Time (GMT +10 hours) | AEST Eastern Standard/Summer Time (GMT +11 hours in summer) |
| Educational text by M.K. Holder, Ph.D. |
|
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. TIME ZONE MAP (PDF,990K)
. TIME ZONE ABBREVIATIONS
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