Here’s the details.
On March 26th you'll be urged to switch off all your lights at 8:30pm (GMT) for an hour.
The environmentally friendly concept started in 2007 in Australia and only a year later more than 50 million people across 35 countries participated. Even global landmarks such as the Sydney Harbour Bridge, CN Tower in Toronto, Golden Gate Bridge in San Francisco, and Rome's Colosseum have stood in darkness for Earth Hour.
Can we do it?