How Long Should You Let a Frozen Turkey Thaw?
Every five pounds of turkey will require 24 hours of thaw time.
Nov. 23, 2011 -- Every five pounds of turkey will require 24 hours of thaw time in the refrigerator (i.e., a 15-pound bird will take three full days).
Depending on the weight of the turkey; move it from the freezer to the refrigerator to thaw.
Sources: http://www.squidoo.com/ten-tips-for-a-happy-thanksgiving-dinner
http://whatscookingamerica.net/Poultry/thanksgivingtips.htm