code: def minute_trend_times(start, end):
      
      if start % 60:
          start = int(start) // 60 * 60
      if end % 60:
          end = int(end) // 60 * 60 + 60
      return int(start), int(end)
docs: Expand a [start, end) interval for use in querying for minute trends
  
      NDS2 requires start and end times for minute trends to be a multiple of
      60 (to exactly match the time of a minute-trend sample), so this function
      expands the given ``[start, end)`` interval to the nearest multiples.
  
      Parameters
      ----------
      start : `int`
          GPS start time of query
  
      end : `int`
          GPS end time of query
  
      Returns
      -------
      mstart : `int`
          ``start`` rounded down to nearest multiple of 60
      mend : `int`
          ``end`` rounded up to nearest multiple of 60