This animation shows that the flux in the time axes is driven by the rotation of the central bar. This causes the alternating flux of time along a time axis. After 6 time steps the cycle is repeated again.
Note that the famous Barbury Castle formation has a circle with 6 steps in it.
This formation is also based on a tetrahedron...
One half of a time axis represents our universe. The midpoint of a time axis represents t=0, the endpoint t=infinity