Twilight Thursdays at the Confluence Tower on Thursday, July 10, 2014 from 7:00pm to 9:00pm CDT at Lewis & Clark Confluence Tower, 435 Confluence Tower Drive, Hartford, IL 62048. Want to catch the best view of the sunset? Twilight Thursdays at the Lewis & Clark Confluence Tower will give you an unforgettable look. Bring family, friends, a special someone or just take the time alone to calm down from a stressful day at work. Visitors are more than welcome to stay until night fall. Don't forget to look at sunset times to plan your trip accordingly. For more information, call (618) 251-9101.