On Saturday 24 March 2018 at 8.30 p.m., millions of people around the world will take part in Earth Hour and switch off their lights to show their commitment to saving our planet. Landmarks from the Taj Mahal to Buckingham Palace will go dark for one hour in a united display of dedication to the fight against climate change.

#PromiseForThePlanet

What is Earth Hour?

Organised by the WWF, Earth Hour is an annual event which will take place all around the world on Saturday 24 March. Homes, businesses and landmarks in cities across the globe will turn off their lights from 8.30 p.m. until 9.30 p.m. to raise awareness of climate change.

In 2017, a record 187 countries and territories across all 7 continents took part in Earth Hour.

In addition to switching off for one hour, Earth Hour is asking people to make a #PromiseForThePlanet. The campaign hopes to highlight how just a few small lifestyle changes – such as eating less meat and more plant-based foods can make a huge difference – if we all work together.

Find out more about the work we’re doing to make a difference

In 2017, nine million people across the UK took part in Earth Hour, along with over 6,000 schools, 300 landmarks and thousands of businesses and organisations.

What’s happening this year

In the UK…

Almost 400 buildings and landmarks will switch off their lights.

In London alone, Nelson’s Column in Trafalgar Square, St Paul’s Cathedral and Buckingham Palace will go dark as well as The Liberty Stadium in Wales, York’s City Walls, Chester Cathedral, St Andrew’s House in Scotland and Old Trafford Cricket Ground in Manchester.

London’s Carnaby Street is also getting involved for the first time with a wildlife takeover of its world-famous Carnaby arch.

  • Scotland celebrates Earth Hour.
  • Scotland celebrates Earth Hour.
  • Scotland celebrates Earth Hour.
  • Earth Hour Big Ben
  • Earth Hour Big Ben
  • Promise for the Planet
  • Earth Hour Buckingham Palace
  • Caernarfon Castle
  • Caernarfon Castle
  • Carnaby
  • Earth Hour
  • Genting Casino
  • Nelson's Column, Dublin
  • Nelson's Column, Dublin
  • The Senedd
  • Earth Hour
  • Wales Millennium Centre
  • Wales Millennium Centre
  • Salisbury Cathedral
  • St. John's Beacon, Liverpool
  • Scotland celebrates Earth Hour.
  • Earth Hour

Around the world…

Hundreds of countries across seven continents will show their commitment to protecting our environment when the clock strikes 8.30 p.m. on 24 March.

The Empire State Building in the US, France’s Eiffel Tower, the Sydney Opera House and the Taj Mahal – to name a few – will all switch off to highlight the plight of our planet.

Get involved…

Getting involved is simple. All you need to do is switch off your lights for 1 hour between the hours of 8:30 p.m.-9:30 p.m. on Saturday, 24 March. But your commitment doesn’t have to end there, you can make a #PromiseForThePlanet and start making a difference every day.

Find out more about making a #PromiseForThePlanet