Millions across the globe are participating in Earth Hour tonight (and as we speak). For those who feel like being out and about tonight, here are some Earth Hour events going on in San Francisco.

5pm: Lights Out at the XYZ Bar presented by Change SF and W Hotel. Enjoy handcrafted organic cocktails, micro brews, and biodynamic wines paired with organic bar bites by Executive Chef Paul Piscopo.

7pm: Market Bar Watch the lights go out at the Ferry Building, the Bay Bridge, and downtown SF, with live performances by bicycle-pedal powered band, Fossil Fool, and carnival-like exhibits by the Sustainable Living Roadshow.

8pm: Dolores Park -- Fun in the Darkness Bring battery- or solar-powered flashlights (no candles), and acoustic instruments are encouraged.

8pm: Medjool Bar Lights Out Enjoy the rooftop bar while it's still open. (Try not to disturb the neighbors, or the douches!)

Additionally, there are all sorts of day-time events going on today.