Genus Angraecum - Angraecum Encyclopedia
is a great resource if you haven't found it yet (and longed for the ones you do not yet own). I have the mag. but it was a small seedling when I bought it and might just be reaching the size for blooming. I was lucky that when I repotted it into my red lava rock and basket-pot, it didn't seem to mind, despite my clumsiness (broke a few roots!). I had read so much that I was sulking when the orchid grew as if nothing had happened. Still, it was a seedling and quite young at the time and I don't plan to ever disturb the roots again.
I usually look up on the angraecum site where the orchid grows, then look up the seasonal weather for that area. Sorry I cannot answer your question. Good luck!