Four Days of Aloha is a celebration of Hawaiian arts and culture starting at Clark College with hula and craft workshops from 8 a.m. to 3:30 p.m. July 20 and 21 and a pa’ina event 5 to 9:30 p.m. July 20. Events in Esther Short Park include Mele on the Lawn concert from 3 to 9 p.m. July 21; a ho’ike event from 9:30 a.m. to 5 p.m. July 22; Ekolo concert from 5 to 10 p.m. July 22; and Celebration of Cultures from 9:30 a.m. to 5:30 p.m. July 23. Registration is required for the workshops and early registration is recommended. Tickets are are required for most concerts. Visit 4daysofaloha.com for the complete workshop schedule, concert line-up and ticket details.