“Let’s switch off India!” says this web site

Earth Hour starts at 8:30 pm on 31 March 2012. By the way, Pune city, where I live, had switched itself off two days ahead on 29 March from 8:00 am to 4:00 pm, a full eight Earth Hours. Not only that, Pune has been doing this every Thursday (and other days at times) for several decades, for various reasons. But that doesn’t seem to have had any effect on global warming.