code: def test_at_time_tz(self):
      # GH#24043
      dti = date_range("2018", periods=3, freq="h", tz="US/Pacific")
      df = DataFrame(list(range(len(dti))), index=dti)
      result = df.at_time(time(4, tzinfo=pytz.timezone("US/Eastern")))
      expected = df.iloc[1:2]
      tm.assert_frame_equal(result, expected)
  
file_path: pandas/pandas/tests/frame/methods/test_at_time.py
imports: from datetime import time
  import numpy
  import pytest
  import pytz
  from pandas._libs.tslibs import timezones
  from pandas import DataFrame, date_range
  import pandas._testing
label_desc: Use image node_id 6 for calling the TestAtTime obj's underlying member method code with example usage: obj.test_at_time_tz() without return types