I think from 4-5 only
Enjoy Happy Hour 4pm - 5pm EST! on Friday's
What is Happy Hour? When is it?
Happy Hour is a one-hour block where everybody has the premium message board features enabled for them. You can do full-text searches, send private messages, read 100's of messages in one click, etc. All the groovy extras! Everything you see on the feature matrix. Happy Hour is every Friday, from 4-5pm EST.