The New York Times reports on Earth Hour's success.
Now we wait to see what the consequences are. The meetings below are ones to watch, not caused by Earth Hour, but maybe influenced by it.
Obama has announced a meeting in Washington on April 27-28 where representatives of the 16 major economies will meet to discuss action on climate change. This will lead up to various meetings, culminating in one in Italy in July.
And of course it should have some influence on both the G20 in the UK, and the Copenhagen meeting in December 2009.