Earth Hour Day 2025 Theme. The first earth day was on april 22nd, 1970, when over 20 million americans across the country demonstrated. Join us again next year for earth hour 2025 on saturday, the 22nd of march at 8:30 pm your local time as we create the biggest hour for earth.
Every year the organisers come up with a theme for the day that helps increase awareness and. May our collective efforts lead to a cleaner and greener planet, where nature.