Honolulu, T.H.--American Evangelist Billy Graham addresses some 20,000 persons in Honolulu Stadium here. It was his only public rally in Hawaii. The cosmopolitan throng consisted of Caucasians, Hawaiians, Japanese, Chinese, Koreans, Negroes and Filipinos. Sprinkled about the stadium's field are camera fans shooting pictures of Mr. Graham as he speaks. In response to his invitation to "make decisions for Christ" an estimated 2,000 marched to the pulpit. Mr. Graham came here on his way home from an eight-week tour of India, the Philippines, Hong Kong, Formosa, Tokyo and Korea.