naively assume timezone is UTC

Author: Aaronearlerichardson

mne_bids/read.py

@@ -401,15 +401,10 @@ def _handle_scans_reading(scans_fname, raw, bids_path):
 
         acq_time = datetime.strptime(acq_time, date_format)
 
-        if acq_time_is_utc:
+        if acq_time_is_utc or acq_time.tzinfo is None:
             # Enforce setting timezone to UTC without additonal conversion
             acq_time = acq_time.replace(tzinfo=timezone.utc)
         else:
-            # if timezone is not set, assume machine's local timezone
-            if acq_time.tzinfo is None:
-                local_tz = datetime.now().astimezone().tzinfo
-                acq_time = acq_time.replace(tzinfo=local_tz)
-            # Convert time offset to UTC
             acq_time = acq_time.astimezone(timezone.utc)
 
         logger.debug(f"Loaded {scans_fname} scans file to set acq_time as {acq_time}.")