On the day of an equinox, the tip of an upright stick’s shadow follows a straight path from west to east.Equinox shadows exhibit this unique behavior due to the alignment of the sun and Earth.This phenomenon allows for the creation of simple sundials by tracking the sun's shadow.Gnomons, or shadow poles or sticks, play a key role in observing this straight shadow path.Unlike at the poles, equinox shadows follow this straight trajectory worldwide on the equinox day.You can witness this phenomenon on March 20, 2025, during the equinox.Individuals can use various objects like flagpoles or makeshift gnomons to track equinox shadows.During the solstices, shadow paths curve, forming hyperbolas, in contrast to the straight equinox path.Differences in shadow paths exist between the Northern and Southern Hemispheres and at the equator during the equinox.Equinox shadows present an intriguing opportunity to observe the sun's movement and the Earth's alignment on a specific day.