Equinox shadows trace a straight line from west to east

March equinox arriving. – – – Equinox shadows are unique, says EarthSky. Do you enjoy sundials, and shadows? Did you know that – on the day of an equinox, and only on the day of an equinox – the tip of an upright stick’s shadow follows a straight west-to-east path? If you track the shadow’s […]

Equinox shadows trace a straight line from west to east

Leave a comment