Tip - Everything you need to know: Groundhog Day 2015 | EarthSky.org

Groundhog Day - a celebration with its roots in astronomy - comes every year on February 2. It's the year's first "cross-quarter" day.
Tags: groundhog day 2015, groundhog sees his shadow, punxsutawney phil, punxsutawney pennsylvania, february cross-quarter day,tonight,astronomy essentials