"The USDA recommends thawing your turkey in the refrigerator. This is the safest method because the turkey will thaw at a consistent, safe temperature. This method takes some time, so allow one day for each 4 – 5 pounds of weight. If your turkey weighs 16 pounds, it will take about four days to thaw. Once thawed, the turkey is safe for another two days, so you can start thawing it six days before thanksgiving (the Friday before Thanksgiving).
The other two methods (cold water and microwave) must be done immediately before you start cooking the turkey, so you’ll have to wait until Thanksgiving morning..."