Ok due to the type of market you are creating, "between march 8th and Dec 31", the market must close when the time frame starts. For markets like that you want to set the range a few days or weeks ahead. You could create a custom market that will do what you are trying to do here, but the template won't allow it because if the question is answered before the market closes it becomes invalid. It's to prevent users from losing their PAL burn fee on creating an invalid market.