A partial solar eclipse occurred on January 23, 1917. 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 partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth. Related eclipses Solar eclipses of 1913–1917 References External links 1917 1 23 1917 in science 1917 1 23 January 1917 events