diff --git a/lib/galaxy/managers/markdown_util.py b/lib/galaxy/managers/markdown_util.py
index 375416b70812..e76501b7dc0f 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(
-            "%Y-%m-/%d, %H:%M:%S"
+            "%Y-%m-%d, %H:%M:%S"
         )
 
     def handle_dataset_type(self, line, hda):
@@ -549,7 +549,7 @@ def handle_generate_time(self, line, generate_time):
         return (content, True)
 
     def handle_invocation_time(self, line, invocation):
-        content = literal_via_fence(invocation.create_time.strftime("%m/%d/%Y, %H:%M:%S"))
+        content = literal_via_fence(invocation.create_time.strftime("%Y-%m-%d, %H:%M:%S"))
         return (content, True)
 
     def handle_dataset_name(self, line, hda):
diff --git a/test/unit/app/managers/test_markdown_export.py b/test/unit/app/managers/test_markdown_export.py
index 3710ff6831b8..72f5b900a5d7 100644
--- a/test/unit/app/managers/test_markdown_export.py
+++ b/test/unit/app/managers/test_markdown_export.py
@@ -414,7 +414,7 @@ def test_get_invocation_time(self):
         assert "invocations" in extra_data
         assert "create_time" in extra_data["invocations"]["be8be0fd2ce547f6"]
         assert extra_data["invocations"]["be8be0fd2ce547f6"]["create_time"] == invocation.create_time.strftime(
-            "%m/%d/%Y, %H:%M:%S"
+            "%Y-%m-%d, %H:%M:%S"
         )
 
     def _ready_export(self, example):