Praying in what direction?

They have two Suraus (praying places) at my wokplace (actually it's four, two each for male and female).
The opinion of the direction of the Kiblah varies almost 90° between the extremes.
So the kiblah arrow keep shifting back and forth depending who been there last.

Quite amusing actually. But a quick look at the sun should help you rule out some of the directions as ridicoulus.