"Telamon" wrote

At what time would both Hawaii and Michigan be on the grey line?

During the next pole shift!


A shift of the "magnetic" pole, which is happening constantly, would have
zero impact on earth's sunrise/sunset times on any given point of the earth.
The earth would have to physically shift its "axis of rotation" away from
the North star to create a "gray line" that runs through Hawaii and the
mainland. The magnetic pole would follow it.