Well, in fact, the event was released on Thursday and today is Wednesday which means it has not been out for 2 weeks. And why would you make it 2 days shorter than last year. We don't even get new titans anymore. Bilops and other people have confirmed that the original post was stating the event will be live until 12th and the post has been changed.
Edit:
Zue mentioned that the event should have been extended by a couple of hours and we didn't even get that.
A lot of people confirmed the end date was actually 12th and this has been changed. I just checked last year's post and the event has been opened the same day but the duration was until 13th, so that makes it 2 days shorter than last year. Something appears to be wrong with this.