As from our prospective its sun moving around the earth and earth is stationary not the sun so rising and setting of sun do not provide any evidence direct. And in ancient time this is a strong evidence for those who believe that Earth is stationary not spinning. But when you start to observe the rising position of sun you would find that its changing throughout the year. And that provide a strong evidence that earth is spinning on its axis and that unusual spin cause it to change the rising and setting position of sun.