Billable hours in StayOnHire come from the actual on-hire and off-hire events recorded against each asset and job, not from someone reconstructing a timesheet at the end of the week. Because that data is captured as it happens, contract rates and billing periods can be applied directly against real usage.
This is one of the most common gaps we hear about from yards still running on spreadsheets: hours get estimated rather than measured, and billing disputes follow.