[tz] So, about those LMT offsets

[Clive D.W. Feather]

Steve Allen via tz said:
> On Sun 2021-05-23T22:43:46+0100 Clive D.W. Feather via tz hath writ:
> > I would actually say that, if we're going to do something like that, there
> > should be a way to put a "not valid before" marker into the zone data and
> > have the functions return either an error or a clearly nonsense answer.
> 
> My impression is that the answers provided by creating such an
> interface would be indistinguishable from the LMT of Kew Observatory
> for London, and the city longitudes for everything else.  Those are
> already akin to nonsense or a declaration of invalidity.

Only to someone who knows what the right answer would be.

I haven't looked at the interfaces in question, but if it can't return a
failure code, I was thinking more of always returning 0000-01-01T00:00:00
irrespective of the input, or something like that.

-- 
Clive D.W. Feather          | If you lie to the compiler,
Email: clive at davros.org     | it will get its revenge.
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