8:30pm / 20:30
You turn off your lights and any other non-essential appliances for one hour at Earth Hour.
No, but it would be very good to the Earth by planting a tree and turning off your lights for 1 hour!
Earth hour is when everyone turns off the lights. Even in different countries the lights are turned off that would not have been turned off on a different day.
switching our lights in the house off for an hour to support wwf's earth hour
half hour before and after sunset and sunrise
If the Earth rotates 15 degrees/hour, then 7.5 degrees is half of 15, so it takes half an hour or 30 minutes.
earth hour started in New Zealand because it is the first to get sun ray.
Earth hour starts at 8:30pm at your local time and finishes at 9:30pm your local time. In 2011, Earth Hour is on 26 March.
in half an hour
The first Earth Hour took place in Sydney, the capital city of New South Wales, Australia, in 2007. It was an idea developed by newspaper The Sydney Morning Herald and WWF (World Wide Fund for Nature/World Wildlife Fund). For that first ever Earth hour, 2.2 million homes and businesses in the Sydney area switched off their lights for the period of one hour.
The idea of turning ones lights off at a certain time on Earth Day is to provide unity and show that everyone is recognizing the saving of energy at the same time. By everyone doing this at the same time it makes a stronger point.
it started in sydney