Earth Hour is the same time and date across the USA. In 2009, it was held from 8:00pm to 9:00pm on the last Saturday in March. It is expected to be held from 8:00pm to 9:00pm, also on the last Saturday in March, in 2010.
1 hour. Example: 8 AM in Texas = 9 AM in Philadelphia, PA.
1 hour
earth hour is an hour with no power
Earth Hour was created in 2007.
disadvantages of earth hour
Earth Hour helps in many ways it saves energy also when you do Earth Hour you realize what you are actually doing to the earth.
hour and thirty min
1 Hour
I took part in earth hour and hope it saved the earth did you take part????
We celebrate earth hour to conserve electricity specially to save our mother earth.
In 2010,128 countreis participated in earth hour
Deer Lake about a half hour from Reading and an hour from Philadelphia.