diff --git a/pandas/core/indexes/datetimes.py b/pandas/core/indexes/datetimes.py
index f6eeb121b1ac0..53d573e7eed71 100644
--- a/pandas/core/indexes/datetimes.py
+++ b/pandas/core/indexes/datetimes.py
@@ -565,10 +565,11 @@ def _parsed_string_to_bounds(self, reso: Resolution, parsed: datetime):
             "hour",
             "minute",
             "second",
-            "minute",
-            "second",
+            "millisecond",
             "microsecond",
+            "nanosecond"
         }
+        
         if reso.attrname not in valid_resos:
             raise KeyError