Answer:Earth Day, which falls on April 22 every year, is the most widely observed secular holiday around the globe. It's not recognized as a federal holiday in the United States, but Americans across the country have observed it for 52 years.
Explanation:Earth Day 1970 led to the passage of landmark environmental laws in the United States, including the Clean Air, Clean Water and Endangered Species Acts and the establishment of the Environmental Protection Agency (EPA).