March 28th, 8:30 pm your local time (so it advances across the globe as the day goes by).
I'm going to be at work, but I plan to do my anti-Earth Hour earlier in the day and turn on everything in my house that I can for an hour. Going to turn on all the lights inside and out, wash and dry clothes, vacuum, put the exhaust fan on in the bathroom, bake something in the oven, etc.
