If I remember correctly it was around 02:00 ish.
The best thing I have ever seen on nights has to have been an all night meteor shower. It was 1998 I think. Once I saw one I went to a high point to look for them and they kept on coming. there was that many that I went back inside and put the plant cctv cameras pointing in their direction to save me from freezing outside.
As I said, nights can be hard but seeing sights like that is fantastic.
Also seeing sunrise in midsummer is nice as well.