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TZ-Abbreviations

Military & Civilian Time Designations From A - Z

There are 25 integer World Time Zones from -12 through 0 (GMT) to +12. Each one is 15° of Longitude as measured East and West from the Prime Meridian of the World at Greenwich, England. Some countries have adopted non-standard time zones, usually 30 minutes offset which have a * designation. 

Each Time Zone is measured relative to Greenwich, England. There are both civilian designations which are typically three letter abbreviations (e.g. EST) for most time zones. In addition there are military designations. These use each letter of the alphabet (except 'J') and are known by their phonetic equivalent. E.G. Greenwich Mean Time (civilian) or Z = Zulu (military and aviation). 

 

Standard 
Alpha 
Military 
Description 
GMT  
Z  
Zulu  
GMT: Greenwich Mean Time UT: Universal UTC: Universal Co-ordinated WET: Western European 
GMT+1 
Alpha 
CET: Central European 
GMT+2 
Bravo 
EET: Eastern European 
GMT+3 
Charlie 
BT: Baghdad 
GMT+3:30 
C* 
 
Tehran, Iran 
GMT+4 
Delta 
Abu Dhabi, UAE 
GMT+4:30 
D* 
 
Afghanistan 
GMT+5 
Echo 
 
GMT+5:30 
E* 
 
India 
GMT+6 
Foxtrot 
 
GMT+6:30 
F* 
 
Cocos Islands 
GMT+7 
Golf 
 
GMT+8 
Hotel 
CCT: China Coast 
GMT+9 
India 
JST: Japan Standard 
GMT+9:30  
I*  
 
Australia Central Standard Darwin, Australia Adelaide, Australia 
GMT+10 
Kilo 
GST: Guam Standard 
GMT+10:30 
K* 
 
Lord Howe Island 
GMT+11 
Lima 
 
GMT+11:30 
L* 
 
Norfolk Island 
GMT+12  
M  
Mike  
IDLE: International Date Line East NZST: New Zealand Standard 
GMT+13:00 
M* 
 
Rawaki Islands: Enderbury Kiribati 
GMT+14:00 
M± 
 
Line Islands: Kiritibati 
GMT-1 
November 
WAT: West Africa Azores, Cape Verde Islands 
GMT-2 
Oscar 
AT: Azores 
GMT-3  
P  
Papa  
Brasilia, Brazil Buenos Aires, Argentina Georgetown, Guyana 
GMT-3:30 
P* 
 
Newfoundland 
GMT-4 
Quebec 
AST: Atlantic Standard Caracas La Paz 
GMT-5  
Romeo  
EST: Eastern Standard. Bogota Lima, Peru New York, NY, USA 
GMT-6  
Sierra  
CST: Central Standard Mexico City, Mexico Saskatchewan, Canada 
GMT-7 
Tango 
MST: Mountain Standard 
GMT-8 
Uniform 
PST: Pacific Standard Los Angeles, CA, USA 
GMT-8:30 
U* 
 
 
GMT-9 
Victor 
YST: Yukon Standard. 
GMT-9:30 
V* 
 
 
GMT-10 
Whiskey 
AHST: Alaska-Hawaii Standard 
 
 
 
CAT: Central Alaska 
 
 
 
HST: Hawaii Standard 
GMT-11 
X-ray 
NT: Nome. 
GMT-12 
Yankee 
IDLW: International Date Line West 

TZ-Olson 

TZ-ISO-3166-1

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