Should i send my scores before deadline

<p>Hey guys. I am applying to duke university under regular decision. i took the december sat but i didn't marked duke as my score recipient. On their website it says that sat scores must be submitted by january 2 deadline. so do i need to order the score report before jan 2 or do they need to be in by jan 2. i know that it takes upto 5 weeks for scores to arrive. please help !!!</p>