Good question Night Train. There is a good reason. They did not find out until last Monday, the 25th, that the new people wanted to move in on Wednesday. They had done some preparation towards moving but it is a lot of work. Last time I moved house, I am sure I had six weeks' notice of the moving day. I think they will be busy enough loading the removal van tomorrow, without driving to the Charity shop. It is just ironic to me that having issued the embargo on other peeps' cast offs being stored at my house, as a favour to them, I am housing more
clutter 
useful stuff that needs a good home.
No Charity shop within a 10 mile radius will be open on a Sunday.