The only reason we have a Steam Sale countdown website is to have a general prediction of when it starts. When it's confirmed, they'll often start the next prediction! if the exact date and time are confirmed, then it's pointless to have a countdown, like this website just showed us!
until the Steam Halloween Sale. You can highlight products in your library, wishlist, and cart by installing our browser extension. Alternatively, you can login via Steam to highlight your owned games (no wishlist and dlc support).