diff --git a/lib/galaxy/managers/markdown_util.py b/lib/galaxy/managers/markdown_util.py
index 40787b321693..375416b70812 100644
--- a/lib/galaxy/managers/markdown_util.py
+++ b/lib/galaxy/managers/markdown_util.py
@@ -348,7 +348,7 @@ def handle_generate_time(self, line, generate_time):
 
     def handle_invocation_time(self, line, invocation):
         self.ensure_rendering_data_for("invocations", invocation)["create_time"] = invocation.create_time.strftime(
-            "%m/%d/%Y, %H:%M:%S"
+            "%Y-%m-/%d, %H:%M:%S"
         )
 
     def handle_dataset_type(self, line, hda):