Thursday, Sept. 17 LOS ANGELES 8:40 a.m. Departs Los Angeles Airport for Monterey. MONTEREY 9:30 a.m. Arrives Monterey Airport. 10:15 a.m. Celebrates Mass at Laguna Seca Raceway. 1 p.m. Visits Carmel Mission Basilica, greeting by Bishop Thaddeus A. Shubsda; prays at Father Junipero Serra's grave. 4 p.m. Departs Carmel Mission for San Francisco (by helicopter). DIOCESE OF MONTEREY Established: 1851. Father Junipero Serra, founder of the California mission system, is buried in the Mission in Carmel. Bishop: Thaddeus A. Shubsda (installed 1982). Catholic Population: 144,700 (20% of total diocese population). Parishes: 45. Priests: 77. Nuns: 285. SAN FRANCISCO 5 p.m. Arrives Chrissy Field. 5:15 p.m. Views Golden Gate Bridge. 5:30 p.m. Parade to Mission Dolores Basilica. 6 p.m. Visits Mission Dolores Basilica, greeting by Archbishop John R. Quinn. 7 p.m. Meeting with representatives of U.S. women and men religious at St. Mary's Cathedral. ARCHDIOCESE OF SAN FRANCISCO Established: 1853, from the Diocese of Monterey. Archbishop: John R. Quinn (installed 1977). Catholic Pop.: 375,000 (24% of total archdiocese population). Parishes: 103 in San Francisco, San Mateo and Marin counties. Priests: 530. Nuns: 1,100.