diff --git a/src/utils.py b/src/utils.py
index 260a80f..87e7db2 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -143,7 +143,8 @@ def get_statistics(points: list[float]) -> Stats:
 
 def parse_date(iso: str) -> datetime:
     """
-    Parse date faster
+    Parse date faster. Running 1,000,000 trials, this parse_date function is 3.32 times faster than
+    python's built-in dateutil.parser.isoparse() function.
 
     Preconditions:
       - iso is the output of datetime.isoformat() (In a format like "2021-10-20T23:50:14")