class_docstr: VIRR Level 1b reader.
class_docstr_tok: ["VIRR","Level","1b","reader","."]
docstr: Get starting observation time.
docstr_tok: ["Get","starting","observation","time","."]
code: def start_time(self):
      """Get starting observation time."""
      start_time = (
          self["/attr/Observing Beginning Date"]
          + "T"
          + self["/attr/Observing Beginning Time"]
          + "Z"
      )
      return datetime.strptime(start_time, "%Y-%m-%dT%H:%M:%S.%fZ")
  
file_path: satpy/satpy/readers/virr_l1b.py
imports: import logging
  from datetime import datetime
  import dask.array
  import numpy
  from pyspectral.blackbody import blackbody_wn_rad2temp
  from satpy.readers.hdf5_utils import HDF5FileHandler
label_desc: Use image node_id 6 for calling the VIRR_L1B obj's underlying member method code with example usage: obj.start_time() and returns: datetime