Since our beginnings, Earth Hour has been known for the symbolic “lights off” in support of our planet. But starting 2023, we've stepped things up, breathing new life into our movement and mission to create the Biggest Hour for Earth.

Earth Hour is calling on individuals, communities, and businesses across the world to switch off their lights and Give an hour for Earth, spending 60 minutes doing something - anything - positive for our planet.

Mar 4, 2024 · From 8:30 pm local time on 23rd March, WWF’s Earth Hour, the world’s largest grassroots environmental movement, returns for its 18th edition with the ‘Biggest Hour for Earth’ in support and celebration of our planet.

Mar 6, 2025 · Earth Hour 2025 returns by providing 60 minutes of global unity around the world, in support and celebration of our planet. Earth Hour serves as a beacon of positivity, hope, and inspiration to rally as many people as possible. The stakes have never been higher.

On 22 March at 8:30 pm, Give an hour for Earth by spending 60 minutes doing something - anything - positive for our one shared home.

Earth Hour, organized by WWF, is a global grassroots movement uniting people to take action on environmental issues and protect the planet. Engaging a massive mainstream community, Earth Hour was famously started as a lights out event in Sydney, Australia in 2007.

Mar 4, 2024 · Earth Hour is moment of unity that brings the world together, shines a spotlight on nature loss and the climate crisis, and inspires millions more to act and advocate for urgent change. Each year, we work together to turn a single Earth Hour into thousands and millions of hours of action for our one shared home.

Mar 24, 2024 · Earth Hour 2024 aims to create the Biggest Hour for Earth with its call-to-action “Give an hour for Earth”. It encourages participants from all walks of life, around the world, to share their commitment to the planet by dedicating one hour to …

Earth Hour isn't just a symbolic movement - it's a catalyst for real change. Here are some of our major milestones and wins over the years.

Earth Hour is moment of unity that brings the world together, shines a spotlight on nature loss and the climate crisis, and inspires millions more to act and advocate for urgent change. Each year, we work together to turn a single Earth Hour into thousands and millions of hours of action for our one shared home.