Astronomy: The Equinox, Solstice, and Earth's Journey

 09/18/2026  |  06:30 PM - 09:00 PM
  Ron Stewart Preserve at Rabbit Mountain  |  Registration Required

Natural History - All Ages Welcome

Why do days grow shorter, longer, warmer, or colder? Join us to explore Earth’s yearly trip around the Sun and how it creates seasons, equinoxes, and solstices. Volunteer naturalists will break it down with clear visuals and everyday examples to help make sense of the year's rhythms. Presentations will be at the picnic shelter, followed by stargazing in the parking area. The Longmont Astronomical Society provides telescopes. Bring a chair or blanket, a light jacket, and a red flashlight, and get ready to enjoy a night under the stars!

Registration is required for this activity.

Boulder County wants to ensure that everyone has equal access to our programs, activities, and services. To request an Americans with Disability Act (ADA) accommodation, please email [email protected], or call 303-441-1386. Submit your request as early as possible, and no later than two business days before the event.

If you need help in another language, please email [email protected], or call 303-678-6277. Contact us as early as possible, and no later than three business days before the event.