Earth Day (April 22 Gregorian) was first observed on April 22, 1970, in the United States. Approximately 20 million people participated across the country, organizing rallies, educational events, and demonstrations to express concerns about air and water pollution, deforestation, and threats to wildlife. The establishment of Earth Day marked a turning point in the history of environmental movements, contributing to the creation of significant legislation such as the Clean Air Act and the Clean Water Act in the United States, and inspiring similar activities in other countries. In subsequent years, Earth Day became a global event, with millions of people worldwide participating annually through educational programs, environmental cleanups, and tree planting initiatives. Earth Day plays an important role in raising public awareness about environmental crises and encouraging responsible behavior toward nature. It serves as a reminder of humanity’s role in preserving the environment and promotes sustainable solutions for the planet’s future. Today, Earth Day is recognized as one of the largest secular observances worldwide, drawing attention from media and international organizations each year. This observance was added to the Gregorian calendar in 1970 following the initiative of environmental activists and the support of certain American politicians, specifically to raise public awareness about environmental issues, and has since been marked by public and educational events.
