Multiple nights we have seen a circle shaped object fly from west to east in the northern sky, it is always after 22:00.As I go out to smoke my last cigarette of the night, I enjoy looking at the sky. Lately, more nights than not, there is a circle light in the sky. It moves rapidly across the sky in an easterly direction, it seems to come from south of Mt. Shasta and heads toward Lassen. Traditional aircraft have also been seen on every occasion, they head up from the south and just as they cross paths, (traditional plane at an obviously lower altitude) the circle craft begins to dim and then totally disappears.This craft has only been seen (by our family) between 10 pm and 11:30 pm. Once the craft is spotted I typically have time to alert the family and get them out there to watch for a couple of minutes so I think it lasts at three minutes each night that it is there.