On the GOX webpage under info I see:
Originally posted by XOC
How long should I stay ?
We will be in Ouray from Spetember 3rd, around noon, until September 8th. We have booked rooms for 5 nights. You may stay as long as you wish.
But in the itinerary it states that GOX will be from the 1-6 of September. I'm assuming that it's the 1st through the 6th of September and the info page is from last year.