23 March
Earth Hour is an international event where all households, communities and business worldwide are encouraged to turn off their lights for one hour at 8.30pm on Saturday 23 March 2013.It is a call to action for every individual, business and community throughout the world, to stand up, to take
responsibility, to get involved and lead the global journey to a sustainable future.Earth Hour asks everyone to take personal accountability for their climate impact and make behavioural changes to facilitate a low-carbon lifestyle. While the theme and message develops each year, the essence of the campaign is that taking the first step is as easy as turning off your lights.Add your voice to the hundreds of millions across the globe who have already spoken with their actions.This event takes place on the last weekend in March as this is around the time of the Spring and Autumn equinoxes in the northern and southern hemispheres respectively, which allows for near coincidental sunset times in both hemispheres, thereby ensuring the greatest visual impact for a global ‗lights out‘ action.