f9f4a8a5_ust_another_WordPress_com_site__Attribute
[Value] 1 [Why] 1 day is the minimum in any case of attributes value combination, don’t ever put it 0, as this will make the password history obsolete, increasing it to more than 1 day is recommended optional [Attribute] 
Minimum password age
akrameleyan | Just another WordPress.com site
Attribute