[time-nuts] Re: UTC is the tail that wags the dog

Bob Camp kb8tq at n1k.org
Wed Feb 1 22:22:25 UTC 2023


Hi

CDMA is another area that nukes leapseconds. There are a number of 
military applications that would get really tangled if you put them in, they
also run some sort of “not UTC” timescale.

A few folks seem to run POSIX time on their Linux boxes ….

Bob

> On Feb 1, 2023, at 3:59 PM, Lux, Jim via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> On 2/1/23 9:19 AM, Steve Allen via time-nuts wrote:
>> On Tue 2023-01-31T10:20:13-0800 Lux, Jim via time-nuts hath writ:
>>> TAI please, not UTC with ickyness like leapseconds. And, yes, there are
>>> people who use GMT (although they're really using UTC, they just call it
>>> GMT).
>> But UTC is the primary.  UTC is the tail that wags the dog.
>> TAI has no legal existence.  UTC is the legal time scale most places.
>> Only BIPM can make TAI, no national laboratory can make TAI.
>> Most national labs are required by statue to make UTC, and from
> 
>> those BIPM constructs TAI.
> 
> But in a space application you want no leapseconds - In practice everyone runs a local clock, and then goes through gyrations to convert that into some recognized frame and epoch.
> 
> 
> 
>> 
>> --
>> Steve Allen                    <sla at ucolick.org>              WGS-84 (GPS)
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