A total solar eclipse occurred at the Moon's ascending node of orbit on Friday, September 9, 1904, with a magnitude of 1.0709. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. Occurring about 1.5 hours after perigee, the Moon's apparent diameter was larger.