diff --git a/features/esm_SAM.py b/features/esm_SAM.py
index 3c52501..302c172 100644
--- a/features/esm_SAM.py
+++ b/features/esm_SAM.py
@@ -213,7 +213,10 @@ def convert_event_time(df_esm_sam_clean: pd.DataFrame) -> pd.DataFrame:
         df_esm_sam_clean["questionnaire_id"] == QUESTIONNAIRE_ID_SAM.get("event_time")
     ].assign(
         event_time=lambda x: pd.to_datetime(
-            x.esm_user_answer, errors="coerce", format="Y-m-d H:M:S %z", exact=True
+            x.esm_user_answer,
+            errors="coerce",
+            format="%Y-%m-%d %H:%M:%S %z",
+            exact=True,
         )
     )
     # Example answer: 2020-09-29 00:05:00 +0200
@@ -249,7 +252,7 @@ def extract_event_duration(df_esm_sam_clean: pd.DataFrame) -> pd.DataFrame:
         event_duration=lambda x: pd.to_datetime(
             x.esm_user_answer.str.slice(start=0, stop=-6),
             errors="coerce",
-            format="Y-m-d H:M:S",
+            format="%Y-%m-%d %H:%M:%S",
         ).dt.time
     )
     # Example answer: 2020-09-29 00:05:00 +0200