In Conventional Science at least 10 dimensions exist otherwise at least 7 dimension.
At the same time a 4 dimensional endless looping flat plane is just outrages.
One observable fact is Suns path over the course of the year.

Using analogy of Möbius strip

or

A lot of things start to fall in place. 12h day, 12h night check large claw. Sydney to Chile, Santiago flight distance, yep, tick that one too.
Makes perfectly sense that there is a different (landless)
MGRS grid for the north polar region and no skipping or adjustment for south polar region
Edit:
Ancient Roman mosaic depicting a structure similar to Möbius strip. Moebius, is a surface with only one side and one boundary when embedded in three-dimensional Euclidean space.
