2022 March 26

On Saturday 26 March 2022, lights around the world will go out for the hour from 8.30pm, from Edinburgh Castle to Buckingham Palace, for Earth Hour 2022. Hundreds of millions of people in the UK and around the world will participate by turning off their lights.
Earth Hour is organised annually by the World Wildlife Foundation to remind us that even small changes can make a real difference for the planet when we act together. This year marks the 15th anniversary of the initiative.