Harran's latitude a 3:4:5 triangle, Ur Ziggurat at 3:5.

Perhaps this is not news to specialists, albeit, I do not find it
online:

"latitude at Harran equals 3/4 atan and at Ur 3/5 atan" (atan = arc
tangent)
The Ur and Harran Latitudes, and Göbekli Tepe
http://jqjacobs.net/blog/gobekli_tepe.html

An inference could be that Ur and Harran astronomical observatories
were geodetically positioned where the math is easiest. Their local
level
planes and the rotation axis form triangles with low integer
proportions.

An accurate value for pi is also found in the latitude of the Ur
Ziggurat.
That can be just an interesting accurate coincidence, of course. Or
not??

My specialized interests lie far from this region. Knowledgeable input
and comment appreciated.
Anyone have detailed knowledge of Harran's ancient monuments and
chronology?
.