Groundhog Day is a popular observance in many parts of the United States. Although some states have in some cases adopted their own groundhogs, the official groundhog, Punxsutawney Phil, lives at Gobbler’s Knob near Punxsutawney, Pennsylvania. The town has attracted thousands of visitors over the years to experience various Groundhog Day events and activities on February 2.
The Punxsutawney Groundhog Club plays an important role in organizing Groundhog Day in the town. Club members, news reporters, locals, and visitors meet at Gobbler’s Knob on February 2 each year to await Phil’s appearance and his weather prediction. Pennsylvania’s governor has been known to attend Groundhog Day ceremonies. Many weather researchers questioned the groundhog’s accuracy in predicting the weather, but some of the groundhog’s fans may not agree.
Punxsutawney held its first Groundhog Day in the United States in the 1800s. The first official trek to Gobbler's Knob was made on February 2, 1887. It is said that Punxsutawney Phil (the groundhog) was named after King Phillip. He was called Br'er Groundhog prior to being known as Phil. Canada also celebrates Groundhog Day.
The movie “Groundhog Day” from 1993, starring comedian Bill Murray, made Punxsutawney Phil in Pennsylvania famous worldwide. The film's plot added new meaning to the term “Groundhog Day” as something that repeats itself endlessly.
According to timeanddate.com