OK, I understand the "blue hour" concept, but I can assure you that we don't have anything that spectacular as far as a deep blue like that. Our sunsets are almost 100% orange all the time and then it goes white, not blue. And since the mountains are to our west, we never ever ever ever EVER get that gorgeous blue for a sunset and in the morning, there's usually clouds on the mountains so there's never a deep blue like that for sunrises either. Actually, now that I think about it, the sunrise I posted is a typical sunset we get. I'll try to get some pix today as it looks pretty clear but there's definitely some haze off the mountains (again, extremely normal).