When, How Long, Trajectory of The Sun: Before Eyes or Circling, etc. etc.
Thanks before.
I'm not sure exactly what you are asking, but I will give it a go:
Firstly, the FE answer is quite simple.
As the sun is above us at all times, the sun would always be visible, so the midnight sun would be everywhere, always.
The trajectory is more complex, and would only appear to be circling from within the range of the sun.
But for the real answer:
The midnight sun occurs for different times depending upon where you are.
If you are at the poles, the sun rises shortly before the equinox and sets shortly after the equinox.
It has constant daylight for a period of slightly over 6 months.
The sun appears to circle you, slowly rising up before slowly lowering back down.
Conversely, right on the Arctic or Antarctic circle, you only just get the midnight sun.
It would happen for a single night.
This (like all other locations), has the sun appear to circle you, but instead of circling in a plane parallel to the ground, it now circles in a plane offset at an angle (at the pole, the angle is 0, at the equator it is 90 degrees).
Between these 2 you have behaviour between these 2.