CINCINNATI, OH – Join the Cincinnati Observatory for a festive, family-friendly Pi Day celebration that blends hands-on science with sweet treats and a dash of playful competition. The event runs from 6:00 PM to 8:00 PM on Friday, March 14, 2026, at Clark Montessori High School’s Cafetorium, with pre-registration online at cincinnatiobservatory.org or guests welcome to pay at the door.
“Pi Day gives us a playful way to explore the beauty of mathematics and its connection to the cosmos,” says Dr. Wes Ryle, Astronomer at the Cincinnati Observatory. “From inflatable planetarium shows to interactive stations, this evening invites guests of all ages to measure, guess, and wonder—then cap it with pizza and pie-in-the-face fun.”
Event highlights include:
-Rotating shows inside the brand-new inflatable planetarium, exploring planetary orbits, galaxies, and the cosmic significance of π.
-Interactive activity stations featuring Pi-themed challenges and hands-on experiments.
-Prize raffles for science-themed items throughout the evening.
-Pizza available for $3 per slice, while supplies last (a nod to 3.14).
-Night sky views through portable telescopes (weather permitting)
-Pi Day pie-in-the-face moment: guests can donate to “Pie” or “Spare” their favorite Observatory team members, with donations boosting or reducing a team’s points. The highest-scoring participant at the end of the evening will face a whipped-cream comet impact—always in good fun and all in support of the Observatory’s mission.
-Coffee and drinks from Travelin’ Tom’s Coffee Truck
Logistics:
Time: 6:00 PM – 8:00 PM, Friday, March 14, 2026
Location: Clark Montessori High School Cafetorium (with access to the inflatable planetarium and activities)
Pre-registration: Online at cincinnatiobservatory.org
At-the-door: Walk-ins welcome; tickets at the door
Tickets: Adults $12; Children and Observatory Members $7
Proceeds from the event support the Cincinnati Observatory’s programs, outreach, and educational initiatives.
ABOUT THE CINCINNATI OBSERVATORY
The Cincinnati Observatory is known as ‘The Birthplace of American Astronomy.’ It houses one of the oldest working telescopes in the world and was the first public observatory in the western hemisphere. Visit www.cincinnatiobservatory.org for more details.
