“Every year hundreds of millions of people around the world take part in Earth Hour. For 60 minutes people in more than 7,000 cities in over 190 countries switch off their lights as a symbolic gesture of solidarity to show they care about our planet and its future.” About Earth Hour – Earth Hour 2023 - Earth Hour
This year Earth Hour is taking place at 8:30PM 25th March (tomorrow tonight!)
To participate, all you need to do is turn the lights off in your house for 1 hour, from 8:30-9:30PM.
For more info check out earthhour.org.au