The Biggest Hour for Earth
Milestones over the years
Earth Hour 2024 x Epson
How to take part
Give an Hour for Earth
Engage your community
Earth Hour for Youth
Up your knowledge
Blog & News
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We're stepping things up this year to create the #BiggestHourForEarth
Be part of the Biggest Hour for Earth
Does an Hour really make a difference?
Attend an Earth Hour event near you
Organizing an Earth Hour event in your country?