Payroll Definition with Dynamic Period Start and End Dates

Summary:

Requirement to create Monthly Payroll with dynamic Period start/end dates.

Content (required):

Client has a requirement to pay employees with the below calendar.

Date_Paid will always be month-end, but period start and end-dates vary by month, with a fixed working days of 21.5 per month.

Employees are paid in advance for part of the next month.

Before I start looking at customizing the solution using UDTs and ValueSets to store all these dates for calculations, is there a way to create dynamic Dates like above in Payroll?

Anything possible with say Time Definitions?

Version (include the version you are using, if applicable):