<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Apr 4, 2017 at 11:07 AM, Derick Rethans <span dir="ltr"><<a href="mailto:tz@derickrethans.nl" target="_blank">tz@derickrethans.nl</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span class="gmail-">On Tue, 4 Apr 2017, Randal L. Schwartz wrote:<br>
<br>
> >>>>> "John" == John Haxby <<a href="mailto:john.haxby@oracle.com">john.haxby@oracle.com</a>> writes:<br>
><br>
> John> (If you're ever near Greenwich I recommend visiting the Royal<br>
> John> Observatory, taking the obligatory foot-in-both-hemispheres selfie<br>
> John> and then going to look at the clocks.)<br>
><br>
> And you should also note that the location where they charge you to take<br>
> that photograph is about 20 meters to the west of where it should be.<br>
> At least, I presume my modern smartphone's GPS is fairly accurate, as<br>
> well as having looked it up on Google Earth later.<br>
<br>
</span>I always thought that the meridian line as marked is 0° in *OSGB36*, not<br>
WGS84 which is what GPS uses:<br>
<br>
<a href="http://theconversation.com/heres-why-the-greenwich-prime-meridian-is-actually-in-the-wrong-place-46302" rel="noreferrer" target="_blank">http://theconversation.com/<wbr>heres-why-the-greenwich-prime-<wbr>meridian-is-actually-in-the-<wbr>wrong-place-46302</a><br>
<a href="http://metro.co.uk/2015/08/15/oops-the-greenwich-meridian-line-is-in-the-wrong-place-5344251/" rel="noreferrer" target="_blank">http://metro.co.uk/2015/08/15/<wbr>oops-the-greenwich-meridian-<wbr>line-is-in-the-wrong-place-<wbr>5344251/</a><br>
<br></blockquote><div><br></div><div><br></div><div>George Kaplan and his colleagues went into why the "Greenwich Meridian" moved pretty exhaustively. </div><div><br></div><div><a href="https://www.researchgate.net/publication/282478531_Why_the_Greenwich_meridian_moved">https://www.researchgate.net/publication/282478531_Why_the_Greenwich_meridian_moved</a><br></div><div><br></div><div>Regards</div><div>Marshall Eubanks </div><div><br></div><div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
cheers,<br>
Derick</blockquote></div><br></div></div>