Timer in dashboard

Hi,

I'm trying to show remaining time inside my dashboard.
I use classic numeric input nodes to set the minutes for my garden watering. I save this value into context and when I start the process I read the value from context and set up into delay node.

But now I woul like to show on my dashboard the remaining time for the watering. How to do this? I didnt find any node for this.

there are at least a couple of countdown nodes that may help in the flows Library - Node-RED