diff --git a/python/pyarrow/tests/test_compute.py b/python/pyarrow/tests/test_compute.py
index 4b58dc65bae9b..98cbd920b509b 100644
--- a/python/pyarrow/tests/test_compute.py
+++ b/python/pyarrow/tests/test_compute.py
@@ -3214,8 +3214,7 @@ def test_list_element():
 
 
 def test_count_distinct():
-    seed = datetime.datetime.now()
-    samples = [seed.replace(year=y) for y in range(1992, 2092)]
+    samples = [datetime.datetime(year=y, month=1, day=1) for y in range(1992, 2092)]
     arr = pa.array(samples, pa.timestamp("ns"))
     assert pc.count_distinct(arr) == pa.scalar(len(samples), type=pa.int64())