class_docstr: File handler for NUCAPS netCDF4 format.
class_docstr_tok: ["File","handler","for","NUCAPS","netCDF4","format","."]
docstr: Get start time.
docstr_tok: ["Get","start","time","."]
code: def start_time(self):
      """Get start time."""
      try:
          return self._parse_datetime(self["/attr/time_coverage_start"])
      except KeyError:
          # If attribute not present, use time from file name
          return self.filename_info["start_time"]
  
imports: import logging
  from collections import defaultdict
  import numpy
  import pandas
  import xarray
  from satpy.readers.netcdf_utils import NetCDF4FileHandler
  from satpy.readers.yaml_reader import FileYAMLReader
label_desc: Use image node_id 4 for calling the NUCAPSFileHandler obj's underlying member method code with example usage: obj.start_time() and returns: self, self