At 9:00 this morning... This window has been "closed" this way since April. I've had 3 layers of plastic taped over it, as well as the curtain closed over this one window to help keep heat and air both in and out. By 3pm this afternoon: We've had extra heavy curtains up every since the school was built to block some of the street lights at night (I can see my way to the bathroom without any light whatsoever!), but I've really enjoyed having the fresh sunlight shining in the room. Even when the curtains are open, it still gives the room a heavier and more closed look. I'm seriously rethinking my curtains before I go to the trouble of washing, re-installing the brackets, and hanging them. There may be more change coming in this department...or not.