NASA’s two venerable Voyager spacecraft are celebrating three decades of flight as they head toward interstellar space. Their ongoing odysseys mark an unprecedented and historic accomplishment. Voyager 2 launched on August 20, 1977, and Voyager 1 launched on September 5, 1977. They continue to return information from distances more than three times farther away than Pluto.
https://www.jpl.nasa.gov/news/pioneering-nasa-spacecraft-mark-thirty-years-of-flight