Skyandtelescope.com, 8/12/13,
A perennial favorite among skywatchers, the Perseid meteor shower makes its annual return on the nights of August 11-12 and 12-13.
Earth should go through the densest part of the stream for some hours on August 12th around 19h Universal Time, which is 3 p.m. Eastern Daylight Time. This means the shower's peak splits the difference between the early-morning hours of August 12th and 13th for anyone in North America or Europe. So the number you count on each of those mornings, even in ideal conditions (no light pollution and the radiant nearly overhead) might not match the International Meteor Organization's predicted peak of 100 per hour. But surprises can always happen.
