Reconciliation Start date calculates differently when last day falls on a weekend.

Summary:

Reconciliation Start date calculates differently when last day falls on a weekend.

My company's period end is based on a calendar month end with a close date of Business Day 4. Reconciliations are open or start on Day 5. When the last day of the month falls on a weekend, the start date is one additional day than if last day falls on a weekday. For example, August 31st is on Sunday and when we use a Start Date Offset is set at 5, Reconciliations open on September 9th instead of September 8th.

Is there something in the setup the needs to be updated?