class_docstr: SEVIRI HRIT format reader.
  
  **Calibration**
  
  See :mod:`satpy.readers.seviri_base`.
  
  
  **Padding of the HRV channel**
  
  By default, the HRV channel is loaded padded with no-data, returning
  a full-disk dataset. If you want the original, unpadded data,
  just provide the `fill_hrv` as False in the `reader_kwargs`::
  
      scene = satpy.Scene(filenames,
                          reader='seviri_l1b_hrit',
                          reader_kwargs={'fill_hrv': False})
  
  **Metadata**
  
  See :mod:`satpy.readers.seviri_base`.
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docstr: Get the end time and round it according to scan law.
code: def nominal_end_time(self):
      """Get the end time and round it according to scan law."""
      tm = self.prologue["ImageAcquisition"]["PlannedAcquisitionTime"][
          "PlannedRepeatCycleEnd"
      ]
      return round_nom_time(
          tm, time_delta=timedelta(minutes=self._repeat_cycle_duration)
      )
  
imports: from __future__ import division
  import copy
  import logging
  from datetime import timedelta
  import dask.array
  import numpy
  import xarray
  from pyresample import geometry
  import satpy.readers.utils
  from satpy._compat import cached_property
  from satpy.readers._geos_area import get_area_definition, get_area_extent, get_geos_area_naming
  from satpy.readers.eum_base import get_service_mode, recarray2dict, time_cds_short
  from satpy.readers.hrit_base import HRITFileHandler, ancillary_text, annotation_header, base_hdr_map, image_data_function
  from satpy.readers.seviri_base import CHANNEL_NAMES, HRV_NUM_COLUMNS, REPEAT_CYCLE_DURATION, SATNUM, NoValidOrbitParams, OrbitPolynomialFinder, SEVIRICalibrationHandler, add_scanline_acq_time, create_coef_dict, get_cds_time, get_satpos, mask_bad_quality, pad_data_horizontally, round_nom_time
  from satpy.readers.seviri_l1b_native_hdr import hrit_epilogue, hrit_prologue, impf_configuration
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 5 for calling the HRITMSGFileHandler obj's underlying member method code with example usage: obj.nominal_end_time() and returns: round_nom_time