Hi and Welcome Sloana!
Looks like a nice collection there. I think many refer to relatively lighter citrus/floral/aquatic scents as casual/day/summer because they reflect or suit the mood. Wearing heavier powdery/ambery/incensy oriental and warmer scents would suit a semi-formal/formal/winter situation better because they would not get overly cloying in the cold as opposed to the heat or outdoors.
I would personally suggest wearing whatever you feel comfortable with because there really are no rules behind when to wear something. You have to try and decide for yourself really. Since its tropically hot and humid here all year round, I wear scents like SMW when I know I would be spending more time outdoors. personally SMW is a casual scent for the day, but I have no qualms wearing it for a nice chill out session in the evening as well, as long as it suits my mood. SMW is wonderful isn't it