On 25 March 2017, the world came together and switched off for WWF’s Earth Hour. Here, we shine a light on some of the incredible facts and stats about this year’s record-breaking Earth Hour.

Since its first year, back in 2007, Earth Hour has grown to a movement embraced across the planet. The premise is simple, but effective; switch off your lights for one hour, and take action on climate change.

Here’s how Earth Hour has grown over the past decade.

With every passing year, Earth Hour grows and brings together more of us worldwide. And 2017 was no exception. Here’s what happened at 8:30pm on 25 March 2017.

What happened around the world

187 countries and territories switched off. That’s the highest total Earth Hour has ever seen. In those 187 countries, over 3,100 landmarks went dark. Around the world, the Pyramids in Cairo, the Empire State Building in New York, the Sheikh Zayed Grand Mosque in Abu Dhabi and more were plunged into darkness. Closer to home, you may have spotted The London Eye, Big Ben and the Houses of Parliament turn off their lights. Actually, it was quite dark, so you may not have spotted them at all…

But Earth Hour didn’t just take over the world this year; it took over the internet too.

What happened online

Prepare yourself for some big numbers...

Earth Hour’s official hashtag reached over 3.5 billion impressions around the world in the three months leading up to the hour itself. Behind some of these impressions were the 619 million posts on Twitter using the three major hashtags of the event (#EarthHourUK, #PassThePanda and #MakeClimateMatter). Over on Facebook 18,500 people and over 15,000 pages took to their feeds to spread the Earth Hour message.

With all this social sharing, it’s no surprise #EarthHour trended in 30 different countries on the hour.

So, it’s safe to say, the world really came together on 25 March, and with seven countries now aiming for new climate policy outcomes, the impact of the hour is going to last for a long, long time.

Find out more about this year’s record-breaking event on the Earth Hour website

Earth Hour may be over for 2017, but there are ways you can make an hour make a difference all year round.

How to make 60 minutes have a truly long-lasting impact