Sunday, August 20, 2017, noon to 2:00 p.m.
Monday, August 21, 2017, 11:00 a.m to 2:00 p.m.
Celebrate an amazing celestial event with us. On Monday August 21, 2017 the sun, moon, and earth will align to cast a shadow across much of the continental United States. This will be the first time since 1991 that the U.S. will experience a total eclipse of the sun. On Arboretum grounds, we will be able to see 87% of the total eclipse, with peak darkness occurring at approximately 1:20 p.m. Visit the Arboretum to learn more about why and how this happens and how to safely view a solar eclipse. Receive a free pair of eclipse viewing glasses (one per person, while supplies last) courtesy of the Adler Planetarium.
From 11 a.m. to 2:00 p.m. on Monday, August 21, visitors can stop by our Discovery Cart outside, where staff will be showing visitors how to view the eclipse safely without glasses by looking at sunlight on the ground as it shines between tree leaves overhead.
Photo courtesy of NASA
Included in Arboretum admission. One pair of eclipse glasses per person, while supplies last.
No registration required. Eclipse glasses are NOT guaranteed with paid admission.