I want to make a diagram like this to display the career spans of several soccer players one below the next:
I know it's basically a bar chart, but I was hoping this has a more specific name, because I want to search the web to find out whether d3.js can easily render one.

The closest I can think of is a Gantt Chart, but that's more often used for project analysis.
(and by the way, this isn't really math).