code: def setStartdatetime(self, recording_start_time):
          
          if isinstance(recording_start_time,datetime):
              self.recording_start_time = recording_start_time
          else:
              self.recording_start_time = datetime.strptime(recording_start_time,"%d %b %Y %H:%M:%S")
          self.update_header()
docs: Sets the recording start Time
  
          Parameters
          ----------
          recording_start_time: datetime object
              Sets the recording start Time