On this day in 1950, parts of the eastern seaboard experienced an unexplained darkening of the sun between 2pm and 6pm. The sky became obscured with dark clouds filled with orange, purple, and violet lights. The event was attributed to wildfires in Canada, though the highly concentrated and brief nature of the clouds is inconsistent with wildfire smoke. Speculation has ranged from UFOs to government experiments, though the event remains unexplained.
