Deep Space Network Tracking Station, Goldstone, California:
Saturn is visible low in the Southwest sky until about 10 p.m. during September. Here is where to find it in the evening of Sept 14th, from NASA’s Goldstone Deep Space Network antenna in southern California (also most of US). DSN Goldstone will track Cassini until the about 8:40 p.m. PDT. DSN Canberra will take over a few minutes earlier, at 8:38 p.m. PDT
Deep Space Network Tracking Station, Canberra, Australia:
Saturn is visible in the Western skies of Australia the evening of September 15th. End of the Cassini Mission occurs at close to 5 a.m. PDT or 10 p.m. AEST (Australian Eastern Standard time) or midnight UTC or 0:00.