It's Friday, Dec. 31, New Year's Eve. Today's birthday: Olympic gold-medalist gymnast Gabby Douglas (1995). Today in 2021, journalist Kevin L. Harden, the guy behind 'Good Morning Rose City,' retired after more than four decades in the newspaper business. Friday's weather should include a wintry mix of rain and snow, with a high in the mid 30s.

•Light it up as the Oregon Zoo's ZooLights opens to the public, 5 p.m., 4001 S.W. Canyon Road. www.oregonzoo.org/visit/zoolights

•Light up the night at Hillsboro's Lightopia - An Illuminated Journey, 5 to 9 p.m., Gordon Faber Recreation Complex, 4450 N.E. Century Blvd., Hillsboro. www.hillsboro-oregon.gov/our-city/departments/parks-recreation/events/festivals-celebrations/winter-events

•Roll through the holidays at Portland International Raceway's Winter Wonderland, 5 to 10 p.m., 1940 N. Victory Blvd. Tickets: $35 for a single vehicle; up to $150 for large vehicles. The money benefits Portland's Sunshine Division. winterwonderlandportland.com/