In the run-up to the International Dance Day on April 29, UNESCO's official Dance Day Around the World webpage highlighted an Iowa City event Tuesday. InterDance, created nine years ago by Nora Garda, celebrates the world of dance in the state of Iowa. It features two days of free performances and workshops throughout central Iowa City on Friday and Saturday. The events include tango at Trumpet Blossom Café, 310 E. Prentiss St., performances by dance companies on the Pentacrest, and workshops featuring Afro-Caribbean-Indian dance at Gateway Dance Theater, 700 S. Dubuque St.