So I've read the in-game guide and a few things online, and here is what I have come to understand:
-A temporally stable area is indicated by the central cog turning clockwise, while counter-clockwise means the area is unstable.
-Temporal instability is more common underground.
-The presence of rifts will cause an area to be unstable while they are there.
The thing I'm not understanding is that, numerous times, I will enter an area where the cog begins turning clockwise rapidly, indicating strong stability. If I continue to walk around that area to figure out where the barrier of that stable area is, I will eventually find areas where the cog stops moving altogether, or begins moving counter-clockwise. When this happens, I immediately return to the same exact spot that was showing high stability, only to find that the cog is now not moving anymore, or might even be turning counter-clockwise, with no rifts in sight or within earshot. This is all on the surface, mind you.
To be clear, I'm not talking about leaving the stable area for hours or even minutes. If I step out of the stable area for even a few seconds and return, the stability is then gone.
Is this normal? Has anyone else experienced this? I have tried several different worlds and cant seem to find a continually stable place to start a base.