By David Topping

Sam Javanrouh—the man behind the venerable Daily Dose of Imagery, this city’s most widely-read photoblog—has always had something of a knack for creating amazing stop-motion timelapse videos. Whether it’s cars filling up an Edward and Bay parking lot or the downtown skyline (go to his archives under the heading “timelapse photography” to see more), his videos are hypnotic, beautiful, and fascinating—a chance to see the motions of the city in a new way.
Javanrouh’s most recent video was added to his site this morning, and depicts the sky over Toronto during the hours surrounding Earth Hour, 6:49 p.m. to 12:46 a.m. on the night of March 29, with each frame of the video representing 30 seconds of time passed. The streaks in the sky are made by the sea of airplanes and helicopters going over the city during the time, and stay visible because the highlights in each frame were accumulated and added to the subsequent frames rather than dropped. Let there be light, indeed.