We have defined SLA plan, with schedule only for working days (Sunday to Thursday) from 8AM to 5PM. However, a task assigned at 4PM on Thursday, is calculated as overdue by Sunday morning itself, showing overdue for 3 days.
Seems its considering Friday and Saturday for calculating working time.
Sample settings
Grace period : 24 in Hours
Transient (SLA can be overridden on ticket transfer or help topic change.
Thanks in advance.