I believe it can be stored up to a year, if not longer. I think that just sitting out, hmm at least a week I expect. Remember when storing, keep it dry.
As far as the light cycle, what cycle are they on now? If you mean from flower to veg, they will get stressed and take a good minute to get back into the veg cycle, but I am not sure if that is what you are asking.
So is that bird going to be allright?
Adieu