Overtime Schedules in HRMS for February

Hello.

We ran into an issue with overtime schedules this week due to February being a short month. Our salaried employees receive overtime. They're normal hours are 86.67 but they work 96.67, they should have 10 hours of overtime. It was only calculating like 1 or 2. We have 14 days in the "for period of days" column in overtime schedule codes setup in HRMS. Any ideas how this calculation is figured for the number of days in a month?  We're using Sage HRMS 2017