A Timeline chart displays a list of events in chronological order
This chart is very popular in a project management field when deadlines, milestones, and other events of a project need to be indicated. As opposed to a Gantt chart, there are not so many details in a Timeline chart and it provides just a general overview of the sequence of events over time.
Also, a Timeline chart is broadly utilized in other areas where the order of events needs to be shown (e.g., a business development or historical info that is related to a specific criminal case).
The timeline chart is most commonly represented in a horizontal form consisting of a horizontal axis and marked with units of time and events. It can also be in various other forms such as vertical, circular, and so forth.
The main function of a Timeline chart is to communicate time-related data, over time, either for analysis or to visually display a story or view of history.