diff --git a/src/hecdss/hecdss.py b/src/hecdss/hecdss.py
index 03b9256..164ab60 100644
--- a/src/hecdss/hecdss.py
+++ b/src/hecdss/hecdss.py
@@ -1,6 +1,6 @@
 """Docstring for public module."""
 from datetime import datetime, timedelta
-from zoneinfo import ZoneInfo, ZoneInfoNotFoundError
+from zoneinfo import ZoneInfo
 
 import numpy as np
 
@@ -474,11 +474,7 @@ def _get_timeseries(self, pathname, startDateTime, endDateTime, trim):
         julian_base_date = julianBaseDate[0]
         timeZoneName = timeZoneName[0]
         if(timeZoneName):
-            try:
-                new_times = [i.replace(tzinfo=ZoneInfo(timeZoneName)) for i in new_times]
-            except ZoneInfoNotFoundError as e: 
-                print(f"Warning: {e}. Using no zone instead.")
-                timeZoneName = False
+            new_times = [i.replace(tzinfo=ZoneInfo(timeZoneName)) for i in new_times]
         elif (DssPath(pathname).D.lower() == "ts-pattern"):
             new_times = []
             start_date = _startDateTime - timedelta(seconds=interval_seconds)