diff --git a/server.py b/server.py
index 22b4499..04dbdb5 100644
--- a/server.py
+++ b/server.py
@@ -224,7 +224,7 @@ def preview_url(
             for result in results:
                 # find the one with the closest timestamp
                 metadata, _ts = result
-                created_at = datetime.datetime.fromtimestamp(_ts)
+                created_at = datetime.datetime.fromtimestamp(_ts - 86400)
                 if ts is None or created_at <= datetime.datetime.fromtimestamp(ts):
                     logging.debug("Optimal cache hit for %r", url)
                     return json.loads(metadata)
@@ -233,12 +233,11 @@ def preview_url(
                 # No close matches, get the latest one
                 metadata, _ts = results[-1]
                 created_at = datetime.datetime.fromtimestamp(_ts)
-                # If the latest one is more than a week old, re-fetch. Otherwise, return.
-                if ts is None or created_at < (datetime.datetime.now() - datetime.timedelta(days=7)):
+                if (datetime.datetime.now() - created_at).days <= 7:
                     logging.debug("Stale cache hit for %r", url)
                     return json.loads(metadata)
                 else:
-                    logging.debug("Cache miss for %r", url)
+                    logging.debug("Stale cache miss for %r", url)
         else:
             logging.debug("Full cache miss for %r", url)