Earth Hour

I never heard  Earth Hour until I come here so  I never celebrate it but from now I join and  promise to celebrate every year.
I think the target of Earth Hour is in 1 hour during all the year we join our thought and switch off all the light for just one hour  trying to make a difference, trying to make better environment,better world , trying to make a deeply peace around all the world and also a special thought to those people who had dark hours in their life.