Timeline chart of projects
 

I want to draw a timeline chart for some projects:

start date&time duration(hours) end date&time
16.4. 6:18 21:40 17.4. 3:58
17.4 3:58 12:20 18.4. 16:18
18.4. 16:18 9:56 19.4. 2:14

So, the end date&time is also the start date&time for the next project
(the next starts right away when previous finishes).

I want to draw a timeline chart for this projects.

Thank you for help,
stremetzky