If the top of the pistil is dry, try removing the pistil off another plant and squeeze the sticky liquid from that onto the top of the pistil you are trying to cross on, and then pollinate. (I read about this in the Daylily Journal some long time back, and I think that it has helped me set some pods.)
That said, evening is definitely too late to expect much success, and in my (limited) experience even by late morning you are pushing your luck (though you might luck out and set a couple of seeds).
Also, with some daylilies you may be unable to set pods, period, for no discernible reason: long pistils, kinked, blunted, or otherwise malformed pistils, hot daytime temperature, too cold of a nighttime temperature, whatever else you can reasonably think of. (Years ago I kept trying on ADRIENNE'S SURPRISE, with no good luck. It would seem like a pod would take, but uniformly around two weeks from making the cross, the "pod" would shrivel up and die.)
