Earth Hour 2009 takes place on Saturday, March 28, 2009 at 8:30 pm – local time.
Earth Hour is the World Wildlife Fund's global initiative where individuals, businesses and governments turn off their lights for one hour to show their support for action on climate change.
The World Wildlife Fund's Climate Projects Map shows some of the work currently being taken by the WWF to measure and fight climate change around the world.
This map uses the Google Maps API to show NASA'a 128 megapixel night time satellite image. It shows the amazing amount of light pollution worldwide. It also highlights the disproportionate amount of energy used by the US and Europe compared to the rest of the world.
Hopefully these lights will all be flickering off at 8.30pm tonight.
If you want to know where in the world it is 8.30 pm then you can use this Google Map. This ingenious Google Map has an embedded clock that changes to show the time in the current map view.
The map sidebar includes some quick links to find the time in cities around the world.