code: def decode_pdf_date(s: str) -> datetime:
      
      if isinstance(s, String):
          s = str(s)
      if s.startswith('D:'):
          s = s[2:]
  
      # Literal Z00'00', is incorrect but found in the wild,
      # probably made by OS X Quartz -- standardize
      if s.endswith("Z00'00'"):
          s = s.replace("Z00'00'", '+0000')
      elif s.endswith('Z'):
          s = s.replace('Z', '+0000')
      s = s.replace("'", "")  # Remove apos from PDF time strings
      try:
          return datetime.strptime(s, r'%Y%m%d%H%M%S%z')
      except ValueError:
          return datetime.strptime(s, r'%Y%m%d%H%M%S')
docs: Decode a pdfmark date to a Python datetime object
  
      A pdfmark date is a string in a paritcular format. See the pdfmark
      Reference for the specification.