Tonight, at 8:30 p.m. in your time zone, Earth Hour begins!
Learn a bit more here as well. It’s more concise than the main page, or hunting through the site for info.
I’m going to participate this evening by turning off all electronics over which I have control in this house that I share with both my parents. (Dad is not keen on the idea at all, and Mom wants to watch the Lifetime movie premiering tonight though she said she’d turn the lights off. The point is to turn off non-essential lighting.)
My plans are to meditate by candlelight and either do some yoga poses by candlelight or read by battery-operated booklight.
If you need ideas for how to occupy your time sans electric lights, look here.
Have a good evening, all!