So wouldn't that be all the more reason for you to use Zone chat? You would pretty much be the majority users at that time. If you get your own channel, there'll be nobody on there. Just start chattin'.
I only bring this up because I am on at around the same time (I work off hours) and would hate to see the zone chat go totally quiet.
EDIT: Also, I don't talk in chat nearly as much as I should, so I am as much to blame for the silence.