Strange question on angraecum growth orientation

[Mugsie]

I mentioned in a previous post that I purchased some teeny tiny angraecums. My question is how should I face then into the sun? Right now they're in a GH that has a shade cloth over it, so it's not full sun, but, should they be orientated perpendicular to the sun's travel or aligned with it? Since the plants grow relatively flat, should they have the leaves oriented east and west, aligned with the sun's travel, or north and south perpendicular to it's travels? Thanks....