Lights off tonight @2030-2130hrs"Switching off your lights is a vote for Earth, or leaving them on is a vote for global warming." Tonight, from 8.30pm to 9.30pm, cities and towns across the world will turn off their lights for Earth Hour. This event highlights energy conservation and climate change around the world. I will be switching off all the lights, or any electrical thingy. Every action, no matter how small, counts. What will you be doing?