class_docstr: File handler for TROPOMI L2 netCDF files.
class_docstr_tok: ["File","handler","for","TROPOMI","L2","netCDF","files","."]
docstr: Get time_coverage_start.
docstr_tok: ["Get","time_coverage_start","."]
code: def time_coverage_start(self):
      """Get time_coverage_start."""
      return datetime.strptime(
          self["/attr/time_coverage_start"], DATE_FMT
      )
  
imports: import logging
  from datetime import datetime
  import dask.array
  import numpy
  import xarray
  from satpy.readers.netcdf_utils import NetCDF4FileHandler, netCDF4
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 4 for calling the TROPOMIL2FileHandler obj's underlying member method code with example usage: obj.time_coverage_start() and returns: datetime