diff --git a/stdlib/datetime.pyi b/stdlib/datetime.pyi
index 8a0536c006d5..6fd01163ea42 100644
--- a/stdlib/datetime.pyi
+++ b/stdlib/datetime.pyi
@@ -243,9 +243,10 @@ class timedelta:
     def __hash__(self) -> int: ...
 
 @disjoint_base
-class datetime(date):
+class datetime:
     min: ClassVar[datetime]
     max: ClassVar[datetime]
+    resolution: ClassVar[timedelta]
     def __new__(
         cls,
         year: SupportsIndex,
@@ -259,6 +260,20 @@ class datetime(date):
         *,
         fold: int = 0,
     ) -> Self: ...
+    @classmethod
+    def today(cls) -> Self: ...
+    @classmethod
+    def fromordinal(cls, n: int, /) -> Self: ...
+    @classmethod
+    def fromisoformat(cls, date_string: str, /) -> Self: ...
+    @classmethod
+    def fromisocalendar(cls, year: int, week: int, day: int) -> Self: ...
+    @property
+    def year(self) -> int: ...
+    @property
+    def month(self) -> int: ...
+    @property
+    def day(self) -> int: ...
     @property
     def hour(self) -> int: ...
     @property
@@ -271,15 +286,18 @@ class datetime(date):
     def tzinfo(self) -> _TzInfo | None: ...
     @property
     def fold(self) -> int: ...
+    def ctime(self) -> str: ...
     # On <3.12, the name of the first parameter in the pure-Python implementation
     # didn't match the name in the C implementation,
     # meaning it is only *safe* to pass it as a keyword argument on 3.12+
     if sys.version_info >= (3, 12):
         @classmethod
         def fromtimestamp(cls, timestamp: float, tz: _TzInfo | None = None) -> Self: ...
+        def strftime(self, format: str) -> str: ...
     else:
         @classmethod
         def fromtimestamp(cls, timestamp: float, /, tz: _TzInfo | None = None) -> Self: ...
+        def strftime(self, format: str, /) -> str: ...
 
     @classmethod
     @deprecated("Use timezone-aware objects to represent datetimes in UTC; e.g. by calling .fromtimestamp(datetime.timezone.utc)")
@@ -332,15 +350,22 @@ class datetime(date):
     def utcoffset(self) -> timedelta | None: ...
     def tzname(self) -> str | None: ...
     def dst(self) -> timedelta | None: ...
-    def __le__(self, value: datetime, /) -> bool: ...  # type: ignore[override]
-    def __lt__(self, value: datetime, /) -> bool: ...  # type: ignore[override]
-    def __ge__(self, value: datetime, /) -> bool: ...  # type: ignore[override]
-    def __gt__(self, value: datetime, /) -> bool: ...  # type: ignore[override]
+    def timetuple(self) -> struct_time: ...
+    def toordinal(self) -> int: ...
+    def __le__(self, value: datetime, /) -> bool: ...
+    def __lt__(self, value: datetime, /) -> bool: ...
+    def __ge__(self, value: datetime, /) -> bool: ...
+    def __gt__(self, value: datetime, /) -> bool: ...
     def __eq__(self, value: object, /) -> bool: ...
     def __hash__(self) -> int: ...
-    @overload  # type: ignore[override]
+    def __add__(self, value: timedelta, /) -> Self: ...
+    def __radd__(self, value: timedelta, /) -> Self: ...
+    @overload
     def __sub__(self, value: Self, /) -> timedelta: ...
     @overload
     def __sub__(self, value: timedelta, /) -> Self: ...
+    def weekday(self) -> int: ...
+    def isoweekday(self) -> int: ...
+    def isocalendar(self) -> _IsoCalendarDate: ...
 
 datetime_CAPI: CapsuleType
diff --git a/stubs/icalendar/icalendar/tools.pyi b/stubs/icalendar/icalendar/tools.pyi
index d63d649f8041..087f6d40d13d 100644
--- a/stubs/icalendar/icalendar/tools.pyi
+++ b/stubs/icalendar/icalendar/tools.pyi
@@ -1,6 +1,6 @@
 import datetime
 from typing import Final
-from typing_extensions import TypeGuard, TypeIs, deprecated
+from typing_extensions import Literal, TypeGuard, TypeIs, deprecated
 
 from pytz.tzinfo import BaseTzInfo
 
@@ -17,8 +17,8 @@ class UIDGenerator:
     @deprecated("Use the Python standard library's :func:`uuid.uuid5` instead.")
     def uid(host_name: str = "example.com", unique: str = "") -> vText: ...
 
-def is_date(dt: datetime.date) -> bool: ...  # and not datetime.date
-def is_datetime(dt: datetime.date) -> TypeIs[datetime.datetime]: ...
+def is_date(dt: datetime.date) -> Literal[True]: ...  # and not datetime.date
+def is_datetime(dt: datetime.date) -> Literal[False]: ...
 def to_datetime(dt: datetime.date) -> datetime.datetime: ...
 def is_pytz(tz: datetime.tzinfo) -> TypeIs[BaseTzInfo]: ...
 def is_pytz_dt(dt: datetime.date) -> TypeGuard[datetime.datetime]: ...  # and dt.tzinfo is BaseTZInfo
diff --git a/stubs/pony/pony/orm/sqltranslation.pyi b/stubs/pony/pony/orm/sqltranslation.pyi
index 816405de10c2..607b29571d69 100644
--- a/stubs/pony/pony/orm/sqltranslation.pyi
+++ b/stubs/pony/pony/orm/sqltranslation.pyi
@@ -620,7 +620,7 @@ class FuncTimedeltaMonad(FuncMonad):
     func: type[timedelta]
     def call(monad, days=None, seconds=None, microseconds=None, milliseconds=None, minutes=None, hours=None, weeks=None): ...
 
-class FuncDatetimeMonad(FuncDateMonad):
+class FuncDatetimeMonad(FuncMonad):
     func: type[datetime]
     def call(monad, year, month, day, hour=None, minute=None, second=None, microsecond=None): ...
     def call_now(monad): ...