When is the best time to pollinate?

[lotis146]

Some time in the future I would like to perform some pollination of my Orchids. But I've been wondering, is it best to pollinate as soon as both parent flowers open or can it be done at any time? One reason I wonder this is, for example, that say I've got two Orchids I want to breed; one is already in bloom and the other in bud. What if the already bloomed flower is on its way out when the other blooms finally open, does this make much of a difference - to your knowledge - with regard to pollination?? I'm sure in the wild as long as the flower is in bloom it can either accept or provide pollen but I had to ask if there is "best" time to pollinate blooms.

Thanks!