You can query archived Salesforce Knowledge Articles using Salesforce Object Query Language (SOQL).

Sample SOQL:

SELECT Id, Title, ArchivedDate,
ArchivedById, ArchivedBy.Name, PublishStatus
FROM Knowledge__kav
WHERE PublishStatus = 'Archived'
AND ArchivedDate = LAST_N_DAYS:180

Archived Status: Articles that are no longer relevant but might be needed for historical reference can be archived. Archived articles are removed from the view of customers, partners, and internal users by default but are still stored in Salesforce. They can be restored and republished if needed.

Note: The “View Archived Articles” permission is required to see these archived Knowledge records. This permission is separate from the general “View Articles” permission.