Evenings brain performs a bit differently

While working in creative business I always had to be creative during the day - from 9am till 9pm. I did discipline myself a lot, but sill the best time of "creating" is at night. When streets are calm, it's dark and nothing fun on TV.
It means that I have to spend at least 2 hours per evening spend on work. I guess it is already time to compensate this time with some time during the day?