Could “Dark to light” imply phases of the Moon, specifically the Waxing Moon? I’ve always noticed that POTUS has his way, or is on the offensive whenever the Moon had the light side facing the right.
From history class, I remember for a fact that the phase of the Moon is an extremely important factor of high profile military operations.
D-Day comes to mind, because there was a need for a New Moon the night before the landing took place. The next First Quarter Moon, the possible meaning of Q’s “Dark to Light”, is December 15th.