Many snake species aren't nocturnal but rather crepiscular, meaning they are active during dusk and dawn. What is "night" to you? Is night right before your bedtime, perhaps 11pm? Or is night like "middle of the night" (which is actually more early morning) around like 2-3 am?
Personally I feed in late evening, usually around 10pm, because that's when everybody gets active. I think day time feeding might throw the snakes off -- or at least one of them would ignore it -- and I ain't got time to feed no body when I come home from work at 3am, not even myself.
Even so, the snakes are back hiding or sleeping when I do get home from work at 3am, so there you go.