I saw an interesting article on the whole running in the morning vs running at night issue, that has some "science" or at least scientific talking heads commenting on it. I've actually made it 50/50 so far for morning runs vs night runs. I will say lately that the stars and meteors during the night runs have been pretty entertaining.
Plus, to help you get in the holiday spirit, you should probably watch this...
21 1.0 in 12:02
22 1.0 in 11:15
23 1.0 in 12:05