BUG: indexing regression with datetime index (#34917)

Author: ketanarlulkar

pandas/tests/indexing/test_partial.py

@@ -650,3 +650,13 @@ def test_loc_with_list_of_strings_representing_datetimes_not_matched_type(
             s[labels]
         with pytest.raises(KeyError, match=msg):
             df.loc[labels]
+
+    def test_indexing_timeseries_regression(self):
+        # Issue 34860
+        arr = date_range("1/1/2008", "1/1/2009")
+        result = arr.to_series()["2008"]
+
+        rng = date_range(start="2008-01-01", end="2008-12-31")
+        expected = Series(rng, index=rng)
+
+        tm.assert_series_equal(result, expected)