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)
The "hour of Venus" is often associated with Venus being visible in the evening or morning sky, but it doesn't have a specific definition related to Earth Hour. Earth Hour is an annual event where participants turn off non-essential lights for one hour to raise awareness about climate change and energy conservation. The hour of Earth Hour typically occurs on the last Saturday of March at 8:30 PM local time. Therefore, the concept of "hour of Venus" does not directly correlate with Earth Hour.
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 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.
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.
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.