code: def time_dayofweek(self, tz):
      self.ts.dayofweek
  
imports: from datetime import datetime
  import numpy
  import pytz
  from pandas import Timestamp
  from .tslib import _tzs
label_desc: Use image node_id 3 for calling the TimestampProperties obj's underlying member method code with example usage: obj.time_dayofweek(tz) without return types