It's based on the reading plan from Divine Mentor, by Wayne Cordeiro (a fabulous book I heartily recommend). I wanted to share the link to this reading plan for you to consider as well.
Because of the way the plan is done, you can start today and get a feel for it. If you complete it, you will read the Old Testament once and the New Testament twice in one year.
Here's the thing though--the goal isn't to read the whole Bible in one year. The goal is to read the Bible regularly and obey what it says. So, if you miss a day, just move on to the appropriate day. Don't feel like you have to go back and catch up. Dig in!