Pi, the mathematical constant representing the ratio of a circle’s circumference to its diameter, plays a key role in geometry and science. It’s often celebrated on March 14, since pi rounds to 3.14. This year, we celebrate Pi Day with a total lunar eclipse, or “blood moon,” on March 13 or 14 depending on your locaton around the globe. For the Coachella Valley, the show begins just before 9 p.m. on March 13, as the moon enters the penumbral shadow and begins to dim. Shortly after 10 p.m., as it passes into the umbral shadow, darkness will gradually cover its surface, casting the moon in a blood-red hue from around 11:30 p.m. to 12:30 a.m. Enjoy the eclipse — and happy Pi Day!
Each month, Rancho Mirage Observatory astronomer Eric McLaughlin spotlights a notable celestial event. Join him at the observatory March 13 from 10:15 p.m. to 12:15 a.m. to watch the eclipse through a telescope. For details, visit ranchomiragelibrary.org/observatory.
