Peter,

Your questions are good questions. Where did you get get the information
about Sumatra? Are you sure of that information?

It would be difficult to get a good accurate Sun sight at this time of
Solstice. I would have a greater question about the sighting that shows
it moved 35 meters than how to prove it did.

The only answer I have for you is Sun Sights averaged over a few weeks.
The noon sight shouldn't be to hard to determine GMT Local Noon for
Longitude. It may take a lot of "Witch's Hats" to average Latitude.

Again, I'd really question the single sighting on Sumatra? That is the
one that sounds strange.

Good Luck on your questions.

We here in Western Washington are on a fault line but the Pacific Plate
is sliding under our Plate and our position has remained the same for
the thirty-five years I've been here but Mt St Helen has let us know
that changes are occurring under us

Ole Thom