1.Groundhog day is the day where a groundhog makes a prediction of when winter will start.The two famous groundhog's are Punxsutawney Phil and buckeye chuck. Phil predicted there is still 6 weeks of winter. Chuck predicted that spring is soon.2.Phil is about 44% right. The author seems skeptical because about two years ago Phil was sued for being wrong.3. German settlers started the tradition. Phil is 128 years old. Some other names for groundhogs are woodchucks, land beavers or whistle pigs.