Peak: August 12, 1921, around 04:00 UTC — up to about 100 meteors an hour under a dark sky. The Moon will be 66% lit: a bright Moon, which will wash out all but the brightest meteors. Meteors seem to come from Perseus; the debris is from Comet Swift–Tuttle. The Northern Hemisphere's favorite: warm nights and bright, fast meteors. Peak times and rates: the International Meteor Organization's working list.