Sunrise 7:02 a.m.; Sunset 8:37 p.m.
• Celebration of Art Spring Arts Fair Opening Reception. View artwork created by CLK Schools students. 5 p.m. Calumet Public Library, 57070 Mine St. 337-0311, ext. 1107.
• International Folk Dance. Beginners welcome. Students, $3; adults, $5. 7 to 10 p.m. Finnish American Heritage Center, 435 Quincy St. (818 )606-0065.
• Impacts of Flooding on Ecosystems. Casey Huckins, Amy Marcarelli and Chris Adams will discuss the impacts of flooding on ecosystems. 7 p.m. Carnegie Museum, 105 Huron St.
• Lake Superior Art Association Program. Watercolor artist Carl Mayer will speak and give a demonstration. 7 p.m. Studio #1, Marquette Arts and Culture Center, lower level, Peter White Public Library, 217 N. Front St. 228-0472.
• Naturopathic Medicine—Gut Health. Dr. Bonnie Cronin will speak. 7 p.m. Heritage Room, Peter White Public Library, 217 N. Front St. 226-4318.
• NMU Choirs and Orchestra Concert. 7:30 p.m. Reynolds Recital Hall, NMU.