Lima Astronomical Society: 8 p.m., Schoonover Observatory, 670 N. Jefferson St., Lima. First meeting of the year.
Hype Night: 12-9 p.m., Guiding Light Ministries, 590 S. Main St., Lima. $5 per person, $8 for two. Fundraiser for Guiding Light Ministries.
Tri-State Gun Show: 8:30 a.m.-3 p.m., Allen County Fairgrounds, 2750 Harding Highway, Lima. Adults are $6, with children under 18 free if accompanied by an adult. More than 400 tables of modern and antique guns, edged weapons and sportsmen equipment planned.
Bluffton University Senior Art Exhibit: all day, online. Virtual artist showcase at www.bluffton.edu/artgallery.
Historic marker dedication: 1:30 p.m. West Auglaize Street, east of Blackhoof Street, Wapakoneta. Auglaize County Historical Society to dedicate a marker for the Wapakoneta Commercial Historic District.
Retirement seminar through the Putnam County District Library: via Zoom; 6 p.m. Free. Adam Hershberger provides information on retirement and making your money last. For login information, call 419-5237-3747 ext. 210 or email firstname.lastname@example.org.
Art display: Mercy Health-St. Rita’s Medical Center, 730 W. Market St., Lima. Aart of Linda Wentling and T.R. Steiner is 2nd Floor Gallery.