Whey protein is the most studied supplement after Creatine. It has been proven that protein helps build muscle, with the ideal ingestion time being immediately post-workout, or in your “anabolic window.” The only protein that is able to be digested within 45 minutes is whey due to its purity and chemical properties. Whey usually comes in a few forms: Hydrolysate, Isolate and Concentrate. Isolate is more filtered, and is more quickly absorbed by the body than Concentrate. However, it is important to keep a balance of both, since your muscles have a constant demand for protein.
Modern humans often find themselves desynchronized from their internal circadian clock, due to the requirements of work (especially night shifts ), long-distance travel, and the influence of universal indoor lighting.  Even if they have sleep debt, or feel sleepy, people can have difficulty staying asleep at the peak of their circadian cycle. Conversely they can have difficulty waking up in the trough of the cycle.  A healthy young adult entrained to the sun will (during most of the year) fall asleep a few hours after sunset, experience body temperature minimum at 6AM, and wake up a few hours after sunrise. 
Does timing matter? Yes, to an extent, but not as much as some supplement companies might boast. Often times studies that report a short anabolic window work with athletes at a fasted state, as there’s a greater negative net protein level, so protein consumption following fasted training stimulates a stronger anabolic response. Yet, there is some merit to timing. For example, for those training two a days, or at intense levels on a very frequent basis, then there should be consideration of protein timing, among other variables (carbs, fluids, etc).