diff --git a/peachjam/helpers.py b/peachjam/helpers.py
index d5ff40893..3791d4774 100644
--- a/peachjam/helpers.py
+++ b/peachjam/helpers.py
@@ -70,6 +70,8 @@ def to_python(self, value):
 
     def to_url(self, value):
         # invalid values will raise ValueError which will raise NoReverseMatch
+        if isinstance(value, datetime):
+            return value.strftime("%Y-%m-%d")
         return datetime.strptime(value, "%Y-%m-%d").date().strftime("%Y-%m-%d")