May 27, 2016, 10:0305/27/16
Yes, you can have an 8 day cycle. As long as you begin raiding right after the raid rankings are posted, you can get 8 days worth of raids. It takes planning, that is also with the planning that you did not raid any points in the previous weeks last day.
Quote from this post
Weekly reset is 7 AM UTC Time Monday, Sorry i was wrong in my previous answer.