I’m often amused when I shoot the sunset and there are other photographers around. As soon as the sun dips below the horizon line, they fold their tripods and pack up their gear and head home. Sometimes it’s when I just start shooting.
Twilight is a wonderful time…sometimes. It really can be seen and used well in the desert, especially the low desert that is surrounded by mountains. When you shoot around mountains, the twilight period is extended by 1/2 to a full hour because the sun will set behind the mountains, but still has not set below the horizon.