Many times people forget that the “Wheel of the Year” with it’s eight equidistant festivals is a modern and not an organic concept. It does not necessarily mean that it is not a valuable concept in the modern era, just that not all of the peoples whose religions we reconstruct or revive built their festival calendar around them.
Greece, Rome and Egypt all spring to mind. These were areas that were NOT as dramatically effected by the differences in light as other parts of the world. But, festivals based on the agricultural cycles are a different matter….