diff --git a/README.md b/README.md
index 00457c0..5515ccf 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ Have the following setup in `project.toml`
 
 ```toml
 [[tool.uv.index]]
-name = "egra-gitea"
+name = "opj-pypi"
 url = "https://git.egplusww.jp/api/packages/PyPI/pypi/simple/"
 publish-url = "https://git.egplusww.jp/api/packages/PyPI/pypi"
 explicit = true
@@ -60,15 +60,15 @@ explicit = true
 
 ```sh
 uv build
-uv publish --index egra-gitea --token <gitea token>
+uv publish --index opj-pypi --token <gitea token>
 ```
 
-## Test package
+## Use package
 
 We must set the full index URL here because we run with "--no-project"
 
 ```sh
-uv run --with corelibs --index egra-gitea=https://git.egplusww.jp/api/packages/PyPI/pypi/simple/ --no-project -- python -c "import corelibs"
+uv run --with corelibs --index opj-pypi=https://git.egplusww.jp/api/packages/PyPI/pypi/simple/ --no-project -- python -c "import corelibs"
 ```
 
 ### Python tests
@@ -101,7 +101,7 @@ uv run test-run/<script>
 This will also add the index entry
 
 ```sh
-uv add corelibs --index egra-gitea=https://git.egplusww.jp/api/packages/PyPI/pypi/simple/
+uv add corelibs --index opj-pypi=https://git.egplusww.jp/api/packages/PyPI/pypi/simple/
 ```
 
 ## Python venv setup
diff --git a/pyproject.toml b/pyproject.toml
index 432e95d..8f78896 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ dependencies = [
 
 # MARK: build target
 [[tool.uv.index]]
-name = "egra-gitea"
+name = "opj-pypi"
 url = "https://git.egplusww.jp/api/packages/PyPI/pypi/simple/"
 publish-url = "https://git.egplusww.jp/api/packages/PyPI/pypi"
 explicit = true
@@ -63,12 +63,13 @@ ignore = [
 [tool.pylint.MASTER]
 # this is for the tests/etc folders
 init-hook='import sys; sys.path.append("src/")'
+
+# MARK: Testing
 [tool.pytest.ini_options]
 testpaths = [
     "tests",
 ]
 
-
 [tool.coverage.run]
 omit = [
     "*/tests/*",
diff --git a/src/corelibs/datetime_handling/datetime_helpers.py b/src/corelibs/datetime_handling/datetime_helpers.py
index 8fd85b0..d33504c 100644
--- a/src/corelibs/datetime_handling/datetime_helpers.py
+++ b/src/corelibs/datetime_handling/datetime_helpers.py
@@ -159,10 +159,14 @@ def parse_flexible_date(
 
     # Try different parsing methods
     parsers: list[Callable[[str], datetime]] = [
-        # ISO 8601 format
+        # ISO 8601 format, also with missing "T"
         lambda x: datetime.fromisoformat(x),  # pylint: disable=W0108
+        lambda x: datetime.fromisoformat(x.replace(' ', 'T')),  # pylint: disable=W0108
         # Simple date format
         lambda x: datetime.strptime(x, "%Y-%m-%d"),
+        # datetime without T
+        lambda x: datetime.strptime(x, "%Y-%m-%d %H:%M:%S"),
+        lambda x: datetime.strptime(x, "%Y-%m-%d %H:%M:%S.%f"),
         # Alternative ISO formats (fallback)
         lambda x: datetime.strptime(x, "%Y-%m-%dT%H:%M:%S"),
         lambda x: datetime.strptime(x, "%Y-%m-%dT%H:%M:%S.%f"),
diff --git a/tests/integration/fixtures/__init__.py b/tests/integration/fixtures/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/unit/datetime_handling/test_datetime_helpers.py b/tests/unit/datetime_handling/test_datetime_helpers.py
index ce13b3f..f641b7d 100644
--- a/tests/unit/datetime_handling/test_datetime_helpers.py
+++ b/tests/unit/datetime_handling/test_datetime_helpers.py
@@ -275,6 +275,53 @@ class TestParseFlexibleDate:
         assert isinstance(result, datetime)
         assert result.tzinfo is not None
 
+    def test_parse_flexible_date_missing_t_with_timezone_shift(self):
+        """Test parse_flexible_date with timezone shift"""
+        result = parse_flexible_date('2023-12-25 15:30:45+00:00', timezone_tz='Asia/Tokyo', shift_time_zone=True)
+        assert isinstance(result, datetime)
+        assert result.tzinfo is not None
+
+    def test_parse_flexible_date_space_separated_datetime(self):
+        """Test parse_flexible_date with space-separated datetime format"""
+        result = parse_flexible_date('2023-12-25 15:30:45')
+        assert isinstance(result, datetime)
+        assert result.year == 2023
+        assert result.month == 12
+        assert result.day == 25
+        assert result.hour == 15
+        assert result.minute == 30
+        assert result.second == 45
+
+    def test_parse_flexible_date_space_separated_with_microseconds(self):
+        """Test parse_flexible_date with space-separated datetime and microseconds"""
+        result = parse_flexible_date('2023-12-25 15:30:45.123456')
+        assert isinstance(result, datetime)
+        assert result.year == 2023
+        assert result.month == 12
+        assert result.day == 25
+        assert result.hour == 15
+        assert result.minute == 30
+        assert result.second == 45
+        assert result.microsecond == 123456
+
+    def test_parse_flexible_date_t_separated_datetime(self):
+        """Test parse_flexible_date with T-separated datetime (alternative ISO format)"""
+        result = parse_flexible_date('2023-12-25T15:30:45')
+        assert isinstance(result, datetime)
+        assert result.year == 2023
+        assert result.month == 12
+        assert result.day == 25
+        assert result.hour == 15
+        assert result.minute == 30
+        assert result.second == 45
+
+    def test_parse_flexible_date_t_separated_with_microseconds(self):
+        """Test parse_flexible_date with T-separated datetime and microseconds"""
+        result = parse_flexible_date('2023-12-25T15:30:45.123456')
+        assert isinstance(result, datetime)
+        assert result.year == 2023
+        assert result.microsecond == 123456
+
     def test_parse_flexible_date_invalid_format(self):
         """Test parse_flexible_date with invalid format returns None"""
         result = parse_flexible_date('invalid-date')