The celebration known for honoring the great American outdoors with community events is Earth Day. This day encourages environmental stewardship and awareness through various activities like community clean-ups, tree plantings, and educational programs. Participants often engage in workshops centered around sustainability practices and conservation efforts, emphasizing the importance of protecting natural resources. The spirit of Earth Day promotes collective action towards preserving the environment, allowing communities to come together to celebrate the beauty of nature and work towards a greener future.