At 20:30 on Saturday, March 22, many city facilities such as the world-scale light-off event "EARTH HOUR" Ferris wheel Cosmo Clock 21 and Yokohama Bay Bridge are turned off all at once!

EARTH HOUR is the world's largest light-off event organized by the World Wide Fund for Nature (WWF), where people around the world turn off the lights at the same time and connect the desire to "protect the earth's environment" with a light-off baton.
At the same time, the “EARTH HOUR 2025 in Yokohama” will be held at 20:30 on Saturday, March 22, and many businesses and organizations that sympathize with EARTH HOUR will participate in the event.
Through EARTH HOUR, Yokohama City will send out the message of the conservation Biodiversity to prevent global warming and realize a decarbonized society by 2050.