| 1954 1955 1956 1957 1958 1959 1960 |
| 1920s 1930s 1940s 1950s 1960s 1970s 1980s |
| distant past - 20th century - 21st century |
Events
- A Vulcan ship crashes near the town of Carbon Creek, Pennsylvania in the United States of America on Earth, leading to an unofficial first contact between humans and Vulcans. (ENT: "Carbon Creek")