Earth Hour is on march 27th 2010 at 8:30pm to 9:30pm
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.
60 minutes = 1 hour. time is a constant so an hour on Mercury is the same as an hour on earth.
In most parts of the world, Earth Hour 2009 took place from 8:00pm-9:00pm on the last Saturday of March. In Australia, Earth Hour was held from 8:30pm to 9:30pm.
23 hours instead of one day (because not all of the world has a day of 24 hours)
Earth Hour 2009 was carried out across 25 time zones, and involved 4000 cities in 88 countries.
Earth Hour : 23rd March 2013It is observed from 20:30 to 21:30 hour local time of each place.
For every 15 degrees of longitude traveled eastwards, there is typically a time difference of one hour ahead. This is due to the Earth's rotation at 15 degrees per hour.
Earth Hour around the world was held from 8:00pm - 9:00pm, local time, on 28 March 2009. Earth Hour 2009 in Australia was 8:30pm-9:30pm on Saturday 28 March 2009.
Earth Hour takes place from 8:00 - 9:00 pm Eastern Time in Atlanta, Georgia. It occurs from 8 - 9pm in their respective time zone in every city, except for Australia, where it occurred from 8:30-9:30pm in 2009.
The next Earth Hour event will take place on March 28, 2009. Earth Hour takes place from 8:00 - 9:00 pm in their respective time zone in every city. Earth Day is celebrated each year on April 22nd.
Earth Hour takes place from 8:00 - 9:00 pm Central Time in Chicago. It occurs from 8 - 9pm in their respective time zone in every city, except for Australia, where it occurred from 8:30-9:30pm.
Earth Hour was created in 2007.