Military – NATO – Letter Timezones

The basis for this is Z – Zulu time – Zero meridian time – the same as UTC It’s a convention to assign letters to time zones, where Z= Zero meridian, and Zulu is the word that represents the letter Z, when it’s used in communication. It is sometimes used in the US Military and NATO in conjunction with 24 hour clocks, and is also popular to use in movies to reference time.

Other letters/words are used for other time zones than UTC, most based on the right or reverse order of the Alphabet. Note that ‘J’ is skipped (‘J’ – Juliet refers to current local time of the observer). There are 25 time zones defined here, but 26 letters in the English alphabet.

The following table lists the Military time zone abbreviations.

Abbreviation Full name Other abbreviations Time zone
Z Zulu Time Zone UTC
Y Yankee Time Zone UTC – 12 hours
X X-ray Time Zone UTC – 11 hours
W Whiskey Time Zone UTC – 10 hours
V Victor Time Zone UTC – 9 hours
U Uniform Time Zone UTC – 8 hours
T Tango Time Zone UTC – 7 hours
S Sierra Time Zone UTC – 6 hours
R Romeo Time Zone UTC – 5 hours
Q Quebec Time Zone UTC – 4 hours
P Papa Time Zone UTC – 3 hours
O Oscar Time Zone UTC – 2 hours
N November Time Zone UTC – 1 hour
A Alpha Time Zone UTC + 1 hour
B Bravo Time Zone UTC + 2 hours
C Charlie Time Zone UTC + 3 hours
D Delta Time Zone UTC + 4 hours
E Echo Time Zone UTC + 5 hours
F Foxtrot Time Zone UTC + 6 hours
G Golf Time Zone UTC + 7 hours
H Hotel Time Zone UTC + 8 hours
I India Time Zone UTC + 9 hours
K Kilo Time Zone UTC + 10 hours
L Lima Time Zone UTC + 11 hours
M Mike Time Zone UTC + 12 hours

Time zones by regions