From a6412f7c499ba5814890496e245c62d2906ac2c6 Mon Sep 17 00:00:00 2001
From: shguild <shifensuperme@gmail.com>
Date: Sun, 11 Oct 2026 09:23:21 +0800
Subject: [PATCH 1/3] docs: record ordinal date year padding fix

---
 CHANGELOG.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58bb1312f..c220466f5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Change Log
 
+## [Unreleased]
+
+### Fixed
+- Fixed `from_format()` with day-of-year tokens (`DDD`/`DDDD`) for years before 1000.
+
 ## [3.2.0] - 2026-01-30
 
 ### Added

From 7e1df9c3af4cba162bd701f3e522fe1d5082a36f Mon Sep 17 00:00:00 2001
From: shguild <shifensuperme@gmail.com>
Date: Sun, 11 Oct 2026 09:24:03 +0800
Subject: [PATCH 2/3] fix: preserve four-digit years in ordinal date parsing

---
 src/pendulum/formatting/formatter.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/pendulum/formatting/formatter.py b/src/pendulum/formatting/formatter.py
index b09977d0d..5413d3a80 100644
--- a/src/pendulum/formatting/formatter.py
+++ b/src/pendulum/formatting/formatter.py
@@ -477,9 +477,10 @@ def _check_parsed(
             validated["year"] = now.year
 
         if parsed["day_of_year"] is not None:
+            year = cast("int", validated["year"])
             dt = cast(
                 "pendulum.DateTime",
-                pendulum.parse(f"{validated['year']}-{parsed['day_of_year']:>03d}"),
+                pendulum.parse(f"{year:04d}-{parsed['day_of_year']:03d}"),
             )
 
             validated["month"] = dt.month

From 95ba0231ee52beb4f9bdc557217dd997b5976c69 Mon Sep 17 00:00:00 2001
From: shguild <shifensuperme@gmail.com>
Date: Sun, 11 Oct 2026 09:24:33 +0800
Subject: [PATCH 3/3] test: cover early-year ordinal format round trips

---
 tests/datetime/test_from_format.py | 33 ++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/tests/datetime/test_from_format.py b/tests/datetime/test_from_format.py
index ecf59632a..6161ecc38 100644
--- a/tests/datetime/test_from_format.py
+++ b/tests/datetime/test_from_format.py
@@ -220,3 +220,36 @@ def test_from_format_2_digit_year():
 
     d = pendulum.from_format("99", "YY")
     assert d.year == 1999
+
+
+@pytest.mark.parametrize("fmt", ["YYYY-DDD", "YYYY-DDDD"])
+@pytest.mark.parametrize(
+    "year,month,day",
+    [
+        (1, 1, 31),
+        (99, 12, 31),
+        (400, 2, 29),
+        (999, 1, 31),
+        (1000, 1, 31),
+        (9999, 12, 31),
+    ],
+)
+def test_from_format_day_of_year_round_trip(fmt, year, month, day):
+    expected = pendulum.datetime(year, month, day)
+
+    assert pendulum.from_format(expected.format(fmt), fmt) == expected
+
+
+def test_from_format_day_of_year_preserves_time_and_offset():
+    d = pendulum.from_format(
+        "0075-032 12:34:56.123456 +05:30", "YYYY-DDDD HH:mm:ss.SSSSSS Z"
+    )
+
+    assert_datetime(d, 75, 2, 1, 12, 34, 56, 123456)
+    assert d.utcoffset().total_seconds() == 19800
+
+
+@pytest.mark.parametrize("text", ["0001-366", "0400-367", "0000-031"])
+def test_from_format_day_of_year_rejects_invalid_dates(text):
+    with pytest.raises(ValueError):
+        pendulum.from_format(text, "YYYY-DDDD")