I was up at 3:30 to see Ken off to the airport for a short trip; I didn't want to sleep again until the sun came up. This was the gift I received for being up at that hour. A I'm not "a morning person", I'd only witness this, at best, about once a year!
The only time I normally see 3.30am is from not going to bed yet! Lovely light and yeah, it's a fab time - everything starting to wake up, clear smell in the air :-)