[GreenKeys] Military Time -vs- UTC

Dave F via GreenKeys greenkeys at mailman.qth.net
Fri Nov 28 11:34:05 EST 2014










Dave:
 
The information given in the non-military website you referenced is  in 
error, quite
honestly. Having spent over 25 years in the US military, mostly in  
communications
where "Zulu" time was used, there was NO "0000" time. It was either  2400 
or 0001
or the seconds in between. The rationale: "0000" would suggest that  time 
either
stops or stands still, which it does NOT do.
 
I worked in installation Communications Centers ("CommCenters"). In  the US
Army, the CommCenter kept the official Headquarters or Post "time"  (FM  
24-17).






It was common and required that CommCenters perform a "Time  Hack"
once each 24 hours, usually at 2400Z to insure that the CommCenters  Zulu
clocks were correct. We did not worry about the seconds -- only to  the 
minute.
 
In CONUS, Time Hacks could be obtained from WWV or the US Naval 
Observatory Atomic Clock. Overseas, the connected AUTODIN  Switching
Center (ASC) provided this service and their clocking devices  were 
synchronized
with the National Bureau of Standards at Fort Collins, CO. Again, no  "0000"
ever appeared in military time or on military clocks (called  
"chronometers").
 
Some civilian operations did use "0000", but we never did. They  referred 
to it
as "Quad Zulu", which is an oxymoron....meaning it doesn't exist.  Whenever
a civilian refile station mentioned "Quad Zulu" we simply logged it  as 
"2400Z".
 
Hope this helps.
 
Dave in SC
 
----------------------------------------------------------------------------
----------------------------------------------------
 
 
 
In a message dated 11/23/2014 7:41:58 P.M. Eastern Standard Time,  
dave at horsfall.org writes:

On  Sun, 23 Nov 2014, tony.podrasky wrote:

>  http://http://www.militaryspot.com/resources/military_time/

Is  that right?  It's riddled with Javascript, but if you lop off the  
leading "http" etc it works better.

> There, I found  something interesting: UTC has 24 timezones but ZULU time 
> has  25 time zones - but unlike the 0000 - 2400, there is no duplicate  
> entry.

My understanding was that Alfa-Zulu refer only to  timezones, and where did 
Juliet time go?  This will distress  the people in Central Australia etc...

-- 
Dave Horsfall DTM  (VK2KFU)  "Bliss is a MacBook with a FreeBSD  server."
http://www.horsfall.org/spam.html (and check the home page  whilst you're  
there)
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