Military & Civilian Time Designations

From Time Zone 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 Time Zones

Note: cities in italics operate Daylight Saving Time during Summer months

GMT

Zone

Military

Civilian Time Zones

Cities
Standard Time Zone

GMT

Current time clock GMT (opens in new window)

Z

Zulu

GMT: Greenwich Mean
UT: Universal
UTC: Universal Co-ordinated
WET: Western European

 
 

East of Greenwich

GMT

Zone

Military

Civilian Time Zones

Cities
Standard Time Zone

GMT+1

A

Alpha

   
GMT+2

B

Bravo

   
GMT+3

C

Charlie

BT: Baghdad
 
GMT+3:30

C*

 

   
GMT+4

D

Delta

   
GMT+4:30

D*

 

   
GMT+5

E

Echo

   
GMT+5:30

E*

 

 
India
GMT+6

F

Foxtrot

   
GMT+6:30

F*

   
Cocos Islands
GMT+7

G

Golf

   
GMT+8

H

Hotel

CCT: China Coast
 
GMT+9

I

India

JST: Japan Standard,
 
GMT+9:30

I*

 
Australia Central Standard
Darwin, Australia
Adelaide, Australia
GMT+10

K

Kilo

GST: Guam Standard
 
GMT+10:30

K*

 

 
Lord Howe Island
GMT+11

L

Lima

   
GMT+11:30

L*

 

 
Norfolk Island
GMT+12

M

Mike

IDLE: International Date Line East
NZST: New Zealand Standard
Wellington, New Zealand
Fiji
Marshall Islands
 
 

M*

 

 
Rawaki Islands: Enderbury Kiribati
 

 
 
Line Islands: Kiritibati

West of Greenwich

GMT

Zone

Military

Civilian Time Zones

Cities
Standard Time Zone

GMT-1

N

November

WAT: West Africa
Azores, Cape Verde Islands
GMT-2

O

Oscar

AT: Azores
 
GMT-3

P

Papa

 
Brasilia, Brazil
Buenos Aires, Argentina
Georgetown, Guyana
 
GMT-3:30

P*

 

 
Newfoundland
GMT-4

Q

Quebec

AST: Atlantic Standard
Caracas
La Paz
GMT-5

R

Romeo

   
GMT-6

S

Sierra

 
Mexico City, Mexico
Saskatchewan, Canada
GMT-7

T

Tango

   
GMT-8

U

Uniform

   
GMT-8:30

U*

 

   
GMT-9

V

Victor

YST: Yukon Standard.
 
GMT-9:30

V*

     
GMT-10

W

Whiskey

AHST: Alaska-Hawaii Standard
CAT: Central Alaska
HST: Hawaii Standard
 
 
GMT-11

X

X-ray

NT: Nome.
 
GMT-12

Y

Yankee

IDLW: International Date Line West
 

 

See Summer Time (or Daylight saving) Time Zones

 

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