[time-nuts] GPS time, UTC and TAI

[Sanjeev Gupta]

Martyn,

The GPS to UTC offset changes at each leap second.
The TAI to UTC offset changes at the same time

The GPS to TAI offset does not change at insertion of leap seconds.  It does
differ on the order of nanosecods, due to the different ways the two are
realised, but this difference does not (should not) build up.

If you can get GPS time, apply offset of 19 secs to get TAI.

-- 
Sanjeev Gupta
+65 98551208     http://www.linkedin.com/in/ghane


On Thu, Oct 22, 2009 at 18:31, Martyn Smith <martyn at ptsyst.com> wrote:

> Helo,
>
> Re my last question.
>
> I've read that GPS time is ahead of UTC time by 15 seconds and TAI time is
> ahead of UTC by 34 seconds.
>
> I need to generate time to a display based on TAI time.
>
> Any ideas how I can do that with a normal M12M GPS receiver.
>
> Martyn
>
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