I too did the Death Valley Spring double, altho I certainly didn't finish in daylight. Great Job norcalscot! What was your elapsed time for the event?
Since the original post asked for some details, it took me 13:01, ride time 11:39. As norcalscot said the day was perfect, not a cloud in the sky. Temps from 45F to 85F. Cycling under the desert night sky was by far the best part. It was my first double century; my longest previous ride was 114mi.
My total time was 11:13 - I didn't look at my on-bike time, but it was probably about 20 to 30 minutes less. I forgot to apply sunscreen, so I'm sporting some funky tan lines at the moment...