Draw a vertical moving line on a Timeline chart

[Christian J Rivera Rivera]

Hey,

I'm trying to make a timeline that would show events happening by the hour.  Including a vertical timeline that moves by the minute is a mayor requirement that I do not know how to implement correctly.

I have code that re renders the chart every set amount of time with the line moved in each iteration, but this seems highly inefficient.

Is it even possible to re-render a vertical line in a google charts timeline without re rendering the whole chart?

Note: I'm including a picture of what I'm trying to achieve (the line won't be moving obviously)