What month do bears go into hibernation?

they dont, there is not a single of species of bear that have ever been known to hibernate. bears torper during winter, this is when they sleep, but can still wake up and walk around, hibernation is when an animal is in a deep sleep for the whole winter and cannot and will not wake up at all. torper is just like a lazy sunday morning when you wake up at 6:00, then fall asleep, then wake up and walk around again, then fall asleep. its the same concept