Calculates the date of Easter from the year 1 to the year 9999. It's also a perpetual calendar.

Official site of the Punxsutawney, Penn., Groundhog Club. Includes detailed history of the day, a listing of local events, and printable activity pages for kids.

Describes a project that begins on Groundhog Day, continues all year long, and involves students "shadowing" a job to learn more about the work world. Lists resources and activities across the US by state.

Groundhog photographs, sounds, animation, information, postcards, and screen saver.

Educational site with information about the people and the plot.

Explains why English people like to gather round bonfires once a year to burn effigies and watch fireworks.