Unfortunately, the purchase link that is provided is set to turn-on and off at a certain time. I do know that the times will have a buffer time to accomodate all time zones throughout the USA and Canada.
Therefore, if you are on the Pacific Coast timezone you will be able to purchase on November 26th after 9PM, as it would be Midnight (27th) on the east coast.
You could have someone purchase the license for you. If you would like to purchase this at a convenient time for you - just send me a Private Message and I will have someone in sales to send to you a "possible" raincheck.