diff --git a/r2/r2/lib/pages/trafficpages.py b/r2/r2/lib/pages/trafficpages.py
index 2ff4e852b..d48e37d29 100644
--- a/r2/r2/lib/pages/trafficpages.py
+++ b/r2/r2/lib/pages/trafficpages.py
@@ -470,6 +470,9 @@ class PromotedLinkTraffic(RedditTraffic):
             self.history = []
             return
 
+        now = datetime.datetime.utcnow().replace(minute=0, second=0,
+                                                 microsecond=0)
+        end = min(end, now)
         cutoff = end - datetime.timedelta(days=31)
         start = max(start, cutoff)