Gaps between timestamps

[robertosw]

I want to create a graph where the x-axis represents a time stamp and the y-axis represents some float values.

The time data on the x-axis has some "gaps" because I only have data from 5am to 12am each day. As a result, I get large "gaps" in my charts from 12am to 5am the next day.

Is there a way to avoid this, so that the distance in px between each x-data point is the same, regardless of how far apart the actual time stamps are, while still showing the correct time stamp on the x-axis?