The armed forces of many nations give letters to time zones, where Z (Zulu) = Zero meridian (UTC or GMT).
Other letters/words are used for other timezones. A to M go eastwards and N to Y go westwards. The letter J is omitted.
Code
Word
Offset
For example
Y
Yankee
UTC -12 hours
Pacific Ocean nations
X
Xray
UTC -11 hours
Pacific Ocean nations
W
Whisky
UTC -10 hours
Hawaii
V
Victor
UTC -9 hours
Alaska, Yukon
U
Uniform
UTC -8 hours
PST, Pacific USA, British Columbia
T
Tango
UTC -7 hours
MST, Mountain USA, Alberta
S
Sierra
UTC -6 hours
CST, Central USA, Saskatchewan, Manitoba, Central America
R
Romeo
UTC -5 hours
EST, Eastern USA, Ontario, Quebec
Q
Quebec
UTC -4 hours
Labrador, New Brunswick, Nova Scotia
P
Papa
UTC -3 hours
Greenland
O
Oscar
UTC -2 hours
Cape Verde
N
November
UTC -1 hour
Atlantic Ocean
Z
Zulu
same as UTC
Britain, Ireland, Portugal, Western Africa
A
Alpha
UTC +1 hour
Western Europe, Algeria, Nigeria, Angola
B
Bravo
UTC +2 hours
Finland, Eastern Europe, Balkans, Libya, Egypt, South Africa
C
Charlie
UTC +3 hours
Moscow, Eastern Africa, Ethiopia, Kenya, Tanzania
D
Delta
UTC +4 hours
Samara (Russia)
E
Echo
UTC +5 hours
Yekaterinburg (Russia)
F
Foxtrot
UTC +6 hours
Omsk (Russia), Bangladesh
G
Golf
UTC +7 hours
Krasnoyarsk (Russia), Western Indonesia
H
Hotel
UTC +8 hours
Irkutsk (Russia), China, Hong Kong, Philippines, Central Indonesia, Western Australia
I
India
UTC +9 hours
Yakutsk (Russia), Korea, Japan, Eastern Indonesia
K
Kilo
UTC +10 hours
Vladivostok (Russia), Papua New Guinea, Eastern Australia
