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World Time Zones

Website: World-Time-Zone.net

Definition of time zones

A time zone item specifies an international time zone, indicated by a small set of letters.

Military time zone designations use a single letter (except j).  Zulu Time (z) is Greenwich Mean Time (GMT).

Here are the most common standard-time time zones, indexed by the zone hour value.

Time Zones West of Greenwich

GMT
offset

Time Zone Abbreviations

Military
Time
Zone

-0:00 GMT = Greenwich Mean Time
UT or UTC for Universal (Coordinated) Time
WET for Western European Time
z
-1:00 WAT = West Africa Time a
-2:00 AT = Azores Time b
-3:00   c
-4:00 AST = Atlantic Standard Time (Canada) d
-5:00 EST = Eastern Standard Time (USA & Canada) e
-6:00 CST = Central Standard Time (USA & Canada) f
-7:00 MST = Mountain Standard Time (USA & Canada) g
-8:00 PST = Pacific Standard Time (USA & Canada) h
-9:00 AKST Alaska Standard Time (USA)
YST = Yukon Standard Time (Canada)
i
-10:00 HST = Hawaii Standard Time
HAST Hawaii-Aleutian Standard Time (USA)
AHST = Alaska-Hawaii Standard Time (obs)
CAT = Central Alaska Time
k
-11:00 NT = Nome Time l
-12:00 IDLW = International Date Line West m

Time Zones East of Greenwich

GMT
offset

Time Zone Abbreviations

Military
Time
Zone

+1:00 CET = Central European Time
FWT = French Winter Time (France)
MET = Middle European Time
MEWT = Middle European Winter Time
SWT = Swedish Winter Time (Sweden)
n
+2:00 EET = Eastern European Time, USSR Zone 1 o
+3:00 BT = Baghdad Time, USSR Zone 2 p
+4:00 ZP4 = USSR Zone 3 q
+5:00 ZP5 = USSR Zone 4. r
+6:00 ZP6 = USSR Zone 5. s
+7:00 CXT = Christmas Island Time (Australia) t
+8:00 CCT = China Coast Time, USSR Zone 7
AWST = Australian Western Standard Time
WST = Western Standard Time (Australia)
u
+9:00 JST = Japan Standard Time, USSR Zone 8 v
+10:00 EAST = East Australian Standard Time
EST = Eastern Standard Time (Australia)
GST = Guam Standard Time, USSR Zone 9
w
+11:00   x
+12:00 IDLE = International Date Line East
NZST = New Zealand Standard Time
NZT = New Zealand Time
y

Here are many Daylight Saving Time (DST) time zones, indexed by the zone hour value.

GMT
offset

Time Zone Abbreviations

Military
Time
Zone

-3:00 ADT = Atlantic Daylight Time (Canada) c
-4:00 EDT = Eastern Daylight Time (USA & Canada) d
-5:00 CDT = Central Daylight Time (USA & Canada) e
-6:00 MDT = Mountain Daylight Time (USA & Canada) f
-7:00 PDT = Pacific Daylight Time (USA & Canada) g
-8:00 AKDT = Alaska Daylight Time (USA)
YDT = Yukon Daylight Time (Canada)
HADT = Hawaii-Aleutian Daylight Time (USA)
h
-9:00 HDT = Hawaii Daylight Time (USA) i
 
GMT
offset

Time Zone Abbreviations

Military
Time
Zone

+1:00 BST = British Summer Time (UK)
IST = Irish Summer Time (Ireland)
WEDT = Western European Daylight Time
WEST Western European Summer Time
n
+2:00 CEDT = Central European Daylight Time
CEST = Central European Summer Time
MEST = Middle European Summer Time
MESZ = Middle European Summer Time
SST = Swedish Summer Time (Sweden)
FST = French Summer Time (France)
o
+3:00 EEDT = Eastern European Daylight Time
EEST Eastern European Summer Time
p
+8:00 WADT = West Australian Daylight Time  
+11:00 EADT = Eastern Australian Daylight Time
EST = Eastern Summer (Daylight) Time (Australia)
x
+13:00 NZDT = New Zealand Daylight Time n/a

French Time Zone Abbreviations

HAA = Heure Avancée de l'Atlantique GMT-3
HAC = Heure Avancée du Centre GMT-5
HAE = Heure Avancée de l'Est GMT-4
HAP = Heure Avancée du Pacifique GMT-7
HAR = Heure Avancée des Rocheuses GMT-6
HAT = Heure Avancée de Terre-Neuve GMT-2:30
HAY = Heure Avancée du Yukon GMT-8
HNA = Heure Normale de l'Atlantique GMT-4
HNC = Heure Normale du Centre GMT-6
HNE = Heure Normale de l'Est GMT-5
HNP = Heure Normale du Pacifique GMT-8
HNR = Heure Normale des Rocheuses GMT-7
HNT = Heure Normale de Terre-Neuve GMT-3:30
HNY = Heure Normale du Yukon GMT-9

German Time Zone Abbreviations

MESZ = Mitteleuropäische Sommerzeit GMT+2
MEZ = Mitteleuropäische Zeit GMT+1

Non-standard Time Zones

ACDT Australian Central Daylight Time Australia GMT+10:30
ACST Australian Central Standard Time Australia GMT+9:30

CST Central Summer (Daylight) Time Australia GMT+10:30
CST Central Standard Time Australia GMT+9:30

IST = India Standard Time GMT+5:30

NDT Newfoundland Daylight Time (Canada) GMT-2:30
NFT Norfolk (Island) Time (Australia) GMT+11:30
NST Newfoundland Standard Time (Canada) GMT-3:30

Military Time Zones

The hourly zones are used by the military are referred to by a letter of the alphabet (or their phonetic equivalent).

The letter J is not used.

The other 25 letters cover the 12 time zones to the east of Greenwich and the 12 time zones to the west of Greenwich.  The 25th zone is Z (Zulu) for GMT / UTC.

A - M are for time zones to the East of Greenwich
N - Y are for time zones to the West of Greenwich.

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Standard Time
in USA & Canada:

Sunday 1 November 2009 -
Sunday 14 March 2010

Europe / UK clocks on
Winter Time / standard time:

Sunday 25 October 2009 01:00 GMT
Sunday 28 March 2010 01:00 GMT

Related Websites:
Time in

USA + Canada

Atlantic Time (Canada) | Eastern Time (EST) | Central Time (CST) | Mountain Time (MT) | Pacific Time (PST) | Alaska Time (AKST) | Hawaii Time (HST) | Daylight Saving Time (DST)

Europe

Central European Time (CET) | Eastern European Time (EET) | Western European Time (WET) | British Summer Time   (BST)

Asia / Pacific

China Time (CST) | India Time (IST) | Japan Time (JST)

Countries on GMT

Europe (Winter only)

UK | Ireland | Portugal

Africa

St Helena | Burkina Faso | Gambia | Ghana | Guinea | Guinea-Bissau | Ivory Coast | Liberia | Mali | Mauritania | Morocco | Sao Tome | Senegal | Togo | Western Sahara

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