I would like to know what's overdue status condition please see below example.

Ticket already closed but we need to change/update dueby time as actual plan and this task not delay, but overdue status still show not change (overdue status=true).

from this example: 

Created Time :  09/01/2017 08:47:26

Responded Date:  09/01/2017 09:16:00

Dueby Time:  19/01/2017 17:30:00

Completed Time:  16/01/2017 11:13:45

Assigned Time:  09/01/2017 09:13:29

Overdue Status: true

Resolved Time:  13/01/2017 10:23:14

Last Updated Time:  05/04/2017 08:42:33

from this example, why overdue status not show as false.