[time-nuts] Loran-C & French Clocks

[Brooke Clarke]

Hi Poul:

I've more than once misread a clock display of the type 12:34:05.
I've noticed that military clocks show 1234:05 and there's no mistaking the 
time.  Seems like a more foolproof display format.

Have Fun,

Brooke Clarke
http://www.prc68.com

Poul-Henning Kamp wrote:
> In message <C5E4EE4D.6481%James.P.Lux at jpl.nasa.gov>, "Lux, James P" writes:
> 
>> On 3/17/09 5:58 AM, "Arnold Tibus" <Arnold.Tibus at gmx.de> wrote:
>>
>>> Interesting facts:
>>> The GPS navigation system has GPS Time as its basis. Galileo
>>> will have TAI as its basis. GLONASS has UTC as its basis,
>>> Air traffic controllers are using UTC.
>>>
>> The latter is probably because air traffic control is basically done at a
>> resolution of 1 minute [...]
> 
> The underlying requirements is 10 seconds, and many ATC installations have
> special UTC clocks with five digits because that makes it pretty hard to get
> it wrong.
> 
> One does pause on seeing a clock with   12:34:5   where the last digit clearly
> isn't dead, because there is no space for it :-)
>