I have After The Fall. I go out early to hybridize and if I remember correctly the flowers were always open when I came out. However I think that was true for all of my smaller flowered daylilies. They were definitely still open in the evening. I don't go out at night to check for nocturnal blooms so I can't say for sure.
Either way it's a great daylily. It even was a bud builder for me last year!
