diff --git a/test-run/string_handling/datetime_helpers.py b/test-run/string_handling/datetime_helpers.py
new file mode 100644
index 0000000..5a60666
--- /dev/null
+++ b/test-run/string_handling/datetime_helpers.py
@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+
+"""
+date string helper test
+"""
+
+from corelibs.string_handling.datetime_helpers import get_datetime_iso8601
+
+
+def main() -> None:
+    """
+    Comment
+    """
+    print(get_datetime_iso8601())
+    print(get_datetime_iso8601('Asia/Tokyo'))
+    print(get_datetime_iso8601('UTC'))
+    print(get_datetime_iso8601('Europe/Vienna'))
+    print(get_datetime_iso8601('America/New_York'))
+    print(get_datetime_iso8601('Australia/Sydney'))
+    print(get_datetime_iso8601('invalid'))
+
+
+if __name__ == "__main__":
+    main()
+
+# __END__