NATO Time Zone codes

Markus Kuhn Markus.Kuhn at
Mon Feb 12 00:44:07 UTC 2001

 John Halloran wrote:
> > There are good reasons for developing standardized time zone
> > abbreviations.

I though that was already done by NATO long ago (but apparently now
abolished in favour of using Zulu/UTC everywhere):

Y  = UTC-01:00
YZ = UTC-00:30
Z  = UTC
ZA = UTC+00:30
A  = UTC+01:00
AB = UTC+01:30
B  = UTC+02:00

or so.


Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK
Email: mkuhn at,  WWW: <>

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