Get Ready for Major Traffic Jams During the 2017 Solar Eclipse Space.com » “Imagine 20 Woodstock festivals occurring simultaneously across the nation,” says Michael Zeiler, an eclipse cartographer who estimates conservatively that between 1.85 million and 7.4 million people may commute into the path of the total shadowing of the sun by the moon on Aug. 21. Michelle2017-06-27T12:42:36-08:00June 19th, 2017|General Interest, Roads, U.S. News|