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Blog Post 21 March 2022 Updated 25 March 2024

Earth Hour 2024: how to get involved

This month, millions of people will switch their lights off as part of Earth Hour.  For 60 minutes, darkness will spread across the globe. Landmarks like the London Eye and Sydney Opera House will turn the world’s city skylines dark. And for one hour, millions will stop and take notice of the climate emergency.

What is Earth Hour?

Earth Hour is an annual campaign from WWF to draw attention to the climate emergency. It shows governments around the world that people are concerned about humanity’s impact on the climate.

The first Earth Hour was in Sydney, Australia in 2007. Since then, over 190 countries and territories have taken part. And in 2023, the lights went off for a combined total of 410,000 hours.


When is Earth Hour 2024?

Earth Hour 2024 is on Saturday, 23 March at 8.30pm . It lasts until 9:30pm local time.

Add the event to your calendar so you don’t miss out:

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How do I take part in Earth Hour 2024?

Anyone can take part in Earth Hour 2024, and you don’t need to sign up or register. All you need to do is switch off any non-essential lights for 60 minutes. That’s all you need to do.

Switching your lights off has the added benefit of lowering your electricity use. In fact, you could save around £7 (£30 in NI) a year by switching off your lights when you leave the room.

Six things you can do during Earth Hour 2024

You don’t have to sit in the dark for an hour. Put the time to good use with one of these activities:

What has Earth Hour achieved?

As well as encouraging people to switch off their lights, Earth Hour has:

  • Created a 3.5 million hectare marine-protected area in Argentina.
  • Established a 2,700-hectare protected forest in Uganda.
  • Helped pass legislation for the protection of seas and forests in Russia.
  • Initiated the planting of 20,000 mangrove seedlings in 13 cities in Indonesia.

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Last updated: 25 March 2024