Sunlight hours analysis


I’m working in Dynamo, trying to use the Ladybug nodes for creating an analysis of sunlight hours.
However, I need for a single day, and as precice as possible… for example to verify if my windows are getting a minimum of 3 hours of direct sunlight.

I haven’t been able to figure out how to make it more precice than hourly, (I would like it to the minute)
Can anyone help???