Taco Bell is celebrating tonight's crescent moon aka the "taco moon," by giving away free tacos. Tonight from 8pm-12:00 am May 4th, you'll get a free taco because of the lunar event. Taco Bell's international campaign is calling it "Taco Moon" because, on that night, the shape of the moon will look like a taco! The offer is available when you go to your local participating Taco Bell between 8:00 pm and 11:59 pm local time while the Taco Moon is shining. No purchase necessary. Check it out.