Kickoff started at 9:00 AM, BAE showed a video to our team then they watched the feed. Go back to the high school and discuss until 6:00 PM. Following day start at 12:00 end at 6:00 PM. Last night we were at the school until 6:00 PM - 9:00 PM.
That would be a total of 18 hours (assuming kickoff ended at 12:00, I wasn't paying attention to the time at that point).
In the first couple of weeks we spend 6 hours on Sundays 3 hours on weekdays and 9 hours on Saturdays. That's 30 hours a week.

The days get longer towards the end of build season.