docs: def timestamp_to_ordinal(timestamp):
      """Convert a timestamp as defined in the soap interface to the time format
      stored in the database.
      """
  
      if timestamp is None:
          return None
  
      ts_time = get_datetime(timestamp)
      # Convert time to Gregorian ordinal (1 = January 1st, year 1)
      ordinal_ts_time = Decimal(ts_time.toordinal())
      total_seconds = (ts_time -
                       datetime(ts_time.year,
                                         ts_time.month,
                                         ts_time.day,
                                         0, 0, 0)).total_seconds()
  
      fraction = (Decimal(repr(total_seconds)) / Decimal(86400)).quantize(Decimal('.00000000000000000001'),rounding=ROUND_HALF_UP)
      ordinal_ts_time += fraction
      log.debug("%s converted to %s", timestamp, ordinal_ts_time)
  
      return ordinal_ts_time