The 25 percent-off discount for Macworld Conference packages has been extended through midnight Pacific time Tuesday (Jan 5). The two-day extension includes the offer of a $10 Expo Pass, which can educate about business solutions as much as many training sessions.

But even one day of those sessions is only $79 through tomorrow night. Some reports show that more than 20,000 attendees are already registered for the first Macworld Expo that won’t have an Apple keynote or a booth. The conference begins in earnest Feb. 11 and features its first Saturday hours this year.

Register at the Expo Web site using the priority code MWHOLIDAY to get the discounts.