Update Frequency vs Freshness Status

Update Frequency (f)	db flag (expected_update_frequency)	Freshness status (Values are numbers of days)
		Fresh			Not Fresh
		Up-to-date	Due	Leeway	Overdue	Long Overdue	Delinquent
Every day	1	0	1 due_age = f		2 overdue_age = f + 2		3 delinquent_age = f + 3
Every week	7	0 - 6	7 due_age = f	8-13	14 overdue_age = f + 7	15-20	21 delinquent_age = f + 14
Every two weeks	14	0 - 13	14 due_age = f	15-20	21 overdue_age = f + 7	22-27	28 delinquent_age = f + 14
Every month	30	0 -29	30 due_age = f	31-43	44 overdue_age = f + 14	45-59	60 delinquent_age = f + 30
Every three months	90	0 - 89	90 due_age = f	91-119	120 overdue_age = f + 30	121-149	150 delinquent_age = f + 60
Every six months	180	0 - 179	180 due_age = f	181-209	210 overdue_age = f + 30	211-239	240 delinquent_age = f + 60
Every year	365	0 - 364	365 due_age = f	366-424	425 overdue_age = f + 60	426-454	455 delinquent_age = f + 90
Never	-1	Always	Never	Never	Never	Never	Never
Live	0	Always	Never	Never	Never	Never	Never
As Needed	-2	Always	Never	Never	Never	Never	Never