diff --git a/sn.go b/sn.go
index 1c33502..bae9c01 100644
--- a/sn.go
+++ b/sn.go
@@ -19,12 +19,13 @@ func CurateContentForStackerNews() (*[]Story, error) {
 	if rows, err = db.Query(`
 		SELECT t.id, time, title, url, author, score, ndescendants
 		FROM (
-			SELECT id, MAX(created_at) AS created_at FROM hn_items
+			SELECT id, MIN(created_at) AS start, MAX(created_at) AS end
+			FROM hn_items
 			WHERE rank = 1 AND id NOT IN (SELECT hn_id FROM sn_items) AND length(title) >= 5
 			GROUP BY id
-			ORDER BY time ASC
+			HAVING unixepoch(end) - unixepoch(start) >= 3600 ORDER BY time ASC
 			LIMIT 1
-		) t JOIN hn_items ON t.id = hn_items.id AND t.created_at = hn_items.created_at;
+		) t JOIN hn_items ON t.id = hn_items.id AND t.end = hn_items.created_at;
 	`); err != nil {
 		err = fmt.Errorf("error querying hn_items: %w", err)
 		return nil, err