Early morning and just as the sun goes down are both really good times to be out taking pictures. The morning light always adds a huge dimension to photos. The evening is more problematic because you have to decide when it is too dark to take any more pictures. In both cases the optimal time is quite short, no more than a half hour or less. Most of my photos are handheld so fading light really makes it difficult to get a shot without camera movement. It also means walking back to the starting point in the quickly descending gloom of night. Maybe I'll start toting a tripod and get serious about the evening shots?