Today is February 29, which happens about once every four years. If you are interested in why we need to add an extra day to our calendar in some years, you will be interested in watching a video and reading more at EarthSky here.
Happy Leap Day!
Today is February 29, which happens about once every four years. If you are interested in why we need to add an extra day to our calendar in some years, you will be interested in watching a video and reading more at EarthSky here.