[tz] Potted history of timekeeping from the BBC

[Marshall Eubanks]

On Tue, Apr 4, 2017 at 11:07 AM, Derick Rethans <tz at derickrethans.nl> wrote:

> On Tue, 4 Apr 2017, Randal L. Schwartz wrote:
>
> > >>>>> "John" == John Haxby <john.haxby at oracle.com> writes:
> >
> > John> (If you're ever near Greenwich I recommend visiting the Royal
> > John> Observatory, taking the obligatory foot-in-both-hemispheres selfie
> > John> and then going to look at the clocks.)
> >
> > And you should also note that the location where they charge you to take
> > that photograph is about 20 meters to the west of where it should be.
> > At least, I presume my modern smartphone's GPS is fairly accurate, as
> > well as having looked it up on Google Earth later.
>
> I always thought that the meridian line as marked is 0° in *OSGB36*, not
> WGS84 which is what GPS uses:
>
> http://theconversation.com/heres-why-the-greenwich-prime-
> meridian-is-actually-in-the-wrong-place-46302
> http://metro.co.uk/2015/08/15/oops-the-greenwich-meridian-
> line-is-in-the-wrong-place-5344251/
>
>

George Kaplan and his colleagues went into why the "Greenwich Meridian"
moved pretty exhaustively.

https://www.researchgate.net/publication/282478531_Why_the_Greenwich_meridian_moved

Regards
Marshall Eubanks





> cheers,
> Derick
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