What day is it?

Over a long weekend like this one it's sometimes hard to keep track of what day it is. I'm fairly sure today was Monday, and a bank holiday at that. But strangely, the postman came this morning and so did the binmen. This could be explained by either

a) Today was Monday but not a bank holiday and I should have been at work
or
b) Today was Tuesday and I should have been at work
or
c) Bank holidays ain't what they used to be (as per yesterday's post)

I'm going for c).