Using Einstein's Theory of Relativity to Reconcile the Six Day Creation with Science

There is this website "Six Days | SixDay Science" that try to reconcile the 6-day creation with the age of the universe using Einstein's theory of relativity, that is, time is relative to the observer's motion. Thus from God's view point, which is the universal cosmic clock, the time taken is 6 days. But since God stretched the universe, the time of the universe is changed. This website claimed that the universal cosmic clock is the cosmic microwave background. This is an interesting way to reconcile the six day creation and the age of the universe and perceived by scientist. This website also has a link to another website that list 26 statements in Genesis 1 that can be tested against current scientific understanding about the creation of the universe and the development of life on Earth.