From 835e82e00aa714cdf9df212f5bde53fa79877ffa Mon Sep 17 00:00:00 2001
From: Adam <111773160+Pebble32@users.noreply.github.com>
Date: Mon, 28 Sep 2026 17:21:02 +0000
Subject: [PATCH 1/4] Make cron timetables hashable

Signed-off-by: Adam <111773160+Pebble32@users.noreply.github.com>
---
 airflow-core/src/airflow/timetables/_cron.py              | 2 +-
 .../tests/unit/timetables/test_trigger_timetable.py       | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/airflow-core/src/airflow/timetables/_cron.py b/airflow-core/src/airflow/timetables/_cron.py
index ed0b3c76bb786..245cc3fbc3953 100644
--- a/airflow-core/src/airflow/timetables/_cron.py
+++ b/airflow-core/src/airflow/timetables/_cron.py
@@ -131,7 +131,7 @@ def __eq__(self, other: object) -> bool:
         return self._expression == other._expression and self._timezone == other._timezone
 
     def __hash__(self):
-        return hash((self._expression, self._timezone))
+        return hash((self._expression, str(self._timezone)))
 
     @property
     def summary(self) -> str:
diff --git a/airflow-core/tests/unit/timetables/test_trigger_timetable.py b/airflow-core/tests/unit/timetables/test_trigger_timetable.py
index f4718f8d04bb9..8e448ed325fd2 100644
--- a/airflow-core/tests/unit/timetables/test_trigger_timetable.py
+++ b/airflow-core/tests/unit/timetables/test_trigger_timetable.py
@@ -1196,3 +1196,11 @@ def test_run_immediately_does_not_pick_future_run(get_info: typing.Callable[[],
     assert info is not None
     assert info.run_after <= pendulum.DateTime(2024, 11, 3, 5, 30, tzinfo=utc)
     assert info.run_after == pendulum.DateTime(2024, 11, 2, 5, tzinfo=utc)
+
+
+def test_cron_timetables_are_hashable():
+    """pendulum ``Timezone`` is unhashable, so hashing the timezone object made ``hash()`` raise."""
+    timetable = CronTriggerTimetable("0 0 * * *", timezone="UTC")
+    same = CronTriggerTimetable("0 0 * * *", timezone="UTC")
+    assert timetable == same
+    assert hash(timetable) == hash(same)

From 8f5abf5fa7d29f1704e7d5d6f9037a840f08cbc4 Mon Sep 17 00:00:00 2001
From: Adam <111773160+Pebble32@users.noreply.github.com>
Date: Mon, 28 Sep 2026 17:21:10 +0000
Subject: [PATCH 2/4] Add newsfragment

Signed-off-by: Adam <111773160+Pebble32@users.noreply.github.com>
---
 airflow-core/newsfragments/73859.bugfix.rst | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 airflow-core/newsfragments/73859.bugfix.rst

diff --git a/airflow-core/newsfragments/73859.bugfix.rst b/airflow-core/newsfragments/73859.bugfix.rst
new file mode 100644
index 0000000000000..8186b3010c3c8
--- /dev/null
+++ b/airflow-core/newsfragments/73859.bugfix.rst
@@ -0,0 +1 @@
+Fix ``hash()`` raising ``TypeError: unhashable type: 'Timezone'`` on cron-based timetables.

From 56136828cb36702f7e8f843d82cd1e787e7e2a23 Mon Sep 17 00:00:00 2001
From: Adam Postek <111773160+Pebble32@users.noreply.github.com>
Date: Tue, 29 Sep 2026 10:52:41 +0000
Subject: [PATCH 3/4] Update
 airflow-core/tests/unit/timetables/test_trigger_timetable.py

Co-authored-by: Ash Berlin-Taylor <ash_github@firemirror.com>
---
 airflow-core/tests/unit/timetables/test_trigger_timetable.py | 1 -
 1 file changed, 1 deletion(-)

diff --git a/airflow-core/tests/unit/timetables/test_trigger_timetable.py b/airflow-core/tests/unit/timetables/test_trigger_timetable.py
index 8e448ed325fd2..02a58323e14ea 100644
--- a/airflow-core/tests/unit/timetables/test_trigger_timetable.py
+++ b/airflow-core/tests/unit/timetables/test_trigger_timetable.py
@@ -1199,7 +1199,6 @@ def test_run_immediately_does_not_pick_future_run(get_info: typing.Callable[[],
 
 
 def test_cron_timetables_are_hashable():
-    """pendulum ``Timezone`` is unhashable, so hashing the timezone object made ``hash()`` raise."""
     timetable = CronTriggerTimetable("0 0 * * *", timezone="UTC")
     same = CronTriggerTimetable("0 0 * * *", timezone="UTC")
     assert timetable == same

From 22ff344b9f193afa29b676688dc4da98dbf8a5c3 Mon Sep 17 00:00:00 2001
From: Adam <111773160+Pebble32@users.noreply.github.com>
Date: Tue, 29 Sep 2026 10:58:48 +0000
Subject: [PATCH 4/4] Remove newsfragment

Signed-off-by: Adam <111773160+Pebble32@users.noreply.github.com>
---
 airflow-core/newsfragments/73859.bugfix.rst | 1 -
 1 file changed, 1 deletion(-)
 delete mode 100644 airflow-core/newsfragments/73859.bugfix.rst

diff --git a/airflow-core/newsfragments/73859.bugfix.rst b/airflow-core/newsfragments/73859.bugfix.rst
deleted file mode 100644
index 8186b3010c3c8..0000000000000
--- a/airflow-core/newsfragments/73859.bugfix.rst
+++ /dev/null
@@ -1 +0,0 @@
-Fix ``hash()`` raising ``TypeError: unhashable type: 'Timezone'`` on cron-based timetables.