“Ghostlight” film screening: 3 p.m. Sunday, Dairy Arts Center, 2590 Walnut St., Boulder. VIVA Theater presents benefit screening of “Ghostlight,” followed by a reception with appetizers and a cash bar. “Ghostlight” is an award-winning feature film that premiered at Sundance in 2024 and celebrates the remarkable ways in which the arts and community can mend shattered lives. $50-$65, vivatheater.org.

“On the Move — Keeping History Alive at the Museum of Boulder” exhibit: 9 a.m. Sunday, Museum of Boulder, 2205 Broadway, Boulder. Since 1944, the Museum of Boulder has been dedicated to preserving Boulder’s story. The Museum’s founder, A.A. Paddock, publisher of the Daily Camera, began soliciting donations of photographs, documents and objects from community members as early as the 1920s. The Museum, as it’s known today, was formally established in 1944 as the Boulder Historical Society. Over the years, it has moved and changed its name several times, amassing a collection of over 45,000 objects and archival records along the way. Free-$10, 303-449-3464, museumofboulder.org.

Festival Del Sol: noon Sunday, Chautauqua Auditorium, 198 Morning Glory Drive, Boulder. Colorado Chautauqua presents the fourth annual bilingual Festival Del Sol. Enjoy live music, food and beverages, guided hikes, Latin dance lessons, family activities and games. Kick off National Hispanic Heritage Month by celebrating the vibrancy of Latino culture in the stunning surroundings of Chautauqua. Free, chautauqua.com.

Autumn Equinox at Sunrise Amphitheater: 6 p.m. Sunday, Sunrise Amphitheater, 1198 Flagstaff Drive, Boulder. Visit the Sunrise Amphitheater to celebrate the start of fall. Tara will lead participants through a PearlFlow accompanied by live music by John Brewster. Class will end with an extended savasana sound bath led by Valerie Weyrich. $20-$35, clients.mindbodyonline.com.

Elemental Tajik Arts at the Museum of Boulder: 9 a.m. Monday, Museum of Boulder, 2205 Broadway, Boulder. In this display, 16 students from the University of Colorado Boulder showcase their work over the summer of 2024. The work contains paintings and artifacts replicating decorative and structural elements of the Boulder’s Dushanbe Teahouse. Students incorporated the premises of Nakkoshi’s Tajik ornamentation to develop patterns and color coordinates for their elements. Nakkoshi patterns include linear repetitive floral elements, axial, radial and octagon-stemmed patterns. The work also showcases choices and combinations of color coordinates based on a complex color wheel. Free-$10, 303-449-3464, museumofboulder.org.

Toddler Explorers at Reynolds: 10:15 a.m. Monday, George Reynolds Branch, 3595 Table Mesa Drive, Boulder. Toddlers explore and learn through hands-on activities that focus on creativity and fun. Imaginations run wild while building foundational skills. calendar.boulderlibrary.org.

Chess Club: 5:30 p.m. Monday, Boulder Public Library, 1001 Arapahoe Ave., Boulder. Play chess and learn with chess master Joshua Romero on second and fourth Mondays every month. Players of all abilities are welcome to drop in. Ages 8-18. Children younger than 8 are welcome with an adult helper. calendar.boulderlibrary.org.

Faces of October 7th with Ofri Reiner: 7 p.m. Monday, Boulder JCC, 6007 Oreg Ave., Boulder. Ofri Reiner is a resilient Israeli survivor of the harrowing Nova massacre. At just 21 years old, she has already faced the darkest of trials, emerging with an indomitable spirit. Her journey is intertwined with the tragedy of war; her beloved brother, Shalev Dagan, served as a combat soldier in Golani 51 and tragically lost his life. Ofri Reiner is more than just a survivor; she is a storyteller, weaving the threads of her family’s journey with her own. Through her public speaking, she shares the profound impact of loss, grief and trauma. Despite her experiences, she finds resilience, inspiring others to find strength in adversity. As an artist, Ofri Reiner discovered her path to healing through creativity. Her artwork captures both the agony of loss and the glimmers of hope that emerge from darkness. Free, boulderjcc.org.