I always prefer to make plans in advance.
If you don't, when the weekends hit, probably the person already has plans.
Maybe sending it on Monday or Tuesday is a bit early but earlier the safer. Unless you want to hear "Sorry, already made plans."
I always prefer to make plans in advance.
I do too, but 5 days Weekend JUST ended
What if you had plans to go out of town or attending some birthday or family event? It wouldn't matter if they asked on Monday or Friday, you'd still have plans.