Earth Hour at Sydney Observatory

Due to the wet weather here in Sydney, unfortunately the free outdoor events at Sydney Observatory for Earth Hour have been cancelled. The forecast is for more rain and the outdoor areas are not able to be used due to water damage.
If you have booked a paid Planetarium ticket, your event will still be proceeding. Please check your email you’ve booked with for more information.
There are still plenty of ways to take part in Earth Hour from your own home and build a more sustainable future. Earth Hour have created some wonderful free documentaries that you can watch here and have also put together some fantastic family crafts and activities to enjoy here.
If you’d like to come back and tour Sydney Observatory and look through our telescopes another day, book a day or night tour here. It is also free to tour the Observatory’s exhibitions and gardens and they are open daily from 10.00 am – 5.00 pm.
Finally, don’t forget to turn off your lights at 8.30 pm on Saturday night!


Earth Hour

Earth Hour launched in Sydney in 2007, with 2.2 million people and 2,100 businesses participating in the ‘lights off’ event. Just one year later, Earth Hour became a global phenomenon with over 35 countries, and an estimated 50-100 million people participating.

2017 will mark the 10th anniversary of Earth Hour as a global phenomenon. What started as an Aussie idea has grown into a global force of nature, that is now celebrated in over 172 countries and over 7,000 cities and towns worldwide. The symbolic hour has grown into the world’s largest grassroots movement for the environment, with beyond-the-hour projects and initiatives happening throughout the year.

Earth Hour is a great home-grown success story: an Aussie campaign designed to draw attention to tackling global warming and get people talking about what we can do to help.

In Australia, Earth Hour is something that really brings communities together, with 1 in every 4 Australians taking part. In 2016, millions of Australians took part in Earth Hour to show their support for a low pollution, clean energy future, one in which we can continue to enjoy the best of nature and our great Aussie outdoor lifestyle.