Repeat after me - 'the Gold Market is Not Rigged'

For those who think anyone who says that the Gold market (and silver market at certain times) is rigged are just conspiracy nutters, then explain to me the kitco graph below. How can the random and chaotic interactions of millions of individuals buying and selling gold 24 x 7 on two days (and separated by one day) have a greater than 90% correlation over a 16 hour period - is this meant to be "the chance we can believe in" ?