diff --git a/tubesync/sync/models.py b/tubesync/sync/models.py
index 86aa4e10..a1e2846d 100644
--- a/tubesync/sync/models.py
+++ b/tubesync/sync/models.py
@@ -1018,7 +1018,7 @@ class Media(models.Model):
             data = json.loads(self.metadata or "{}")
             if '_reduce_data_ran_at' in data.keys():
                 total_seconds = data['_reduce_data_ran_at']
-                ran_at = posix_epoch + timedelta(seconds=total_seconds)
+                ran_at = self.posix_epoch + timedelta(seconds=total_seconds)
                 if (timezone.now() - ran_at) < timedelta(hours=1):
                     return data
 
@@ -1132,7 +1132,7 @@ class Media(models.Model):
         if timestamp is not None:
             try:
                 timestamp_float = float(timestamp)
-                published_dt = posix_epoch + timedelta(seconds=timestamp_float)
+                published_dt = self.posix_epoch + timedelta(seconds=timestamp_float)
             except Exception as e:
                 log.warn(f'Could not compute published from timestamp for: {self.source} / {self} with "{e}"')
         return published_dt