diff --git a/numpy/__init__.pyi b/numpy/__init__.pyi
index 9f3e42a69957..9cd67c272f5c 100644
--- a/numpy/__init__.pyi
+++ b/numpy/__init__.pyi
@@ -3374,7 +3374,7 @@ class busdaycalendar:
     def __new__(
         cls,
         weekmask: ArrayLike = ...,
-        holidays: ArrayLike = ...,
+        holidays: ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     ) -> busdaycalendar: ...
     @property
     def weekmask(self) -> NDArray[bool_]: ...
diff --git a/numpy/core/multiarray.pyi b/numpy/core/multiarray.pyi
index a9f68e1815cf..3c1c37108fdf 100644
--- a/numpy/core/multiarray.pyi
+++ b/numpy/core/multiarray.pyi
@@ -67,6 +67,7 @@ from numpy.typing import (
     NDArray,
     ArrayLike,
     _SupportsArray,
+    _NestedSequence,
     _FiniteNestedSequence,
     _ArrayLikeBool_co,
     _ArrayLikeUInt_co,
@@ -818,28 +819,28 @@ def datetime_data(
 
 @overload
 def busday_count(  # type: ignore[misc]
-    begindates: _ScalarLike_co,
-    enddates: _ScalarLike_co,
+    begindates: _ScalarLike_co | dt.date,
+    enddates: _ScalarLike_co | dt.date,
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: None = ...,
 ) -> int_: ...
 @overload
 def busday_count(  # type: ignore[misc]
-    begindates: ArrayLike,
-    enddates: ArrayLike,
+    begindates: ArrayLike | dt.date | _NestedSequence[dt.date],
+    enddates: ArrayLike | dt.date | _NestedSequence[dt.date],
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: None = ...,
 ) -> NDArray[int_]: ...
 @overload
 def busday_count(
-    begindates: ArrayLike,
-    enddates: ArrayLike,
+    begindates: ArrayLike | dt.date | _NestedSequence[dt.date],
+    enddates: ArrayLike | dt.date | _NestedSequence[dt.date],
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: _ArrayType = ...,
 ) -> _ArrayType: ...
@@ -847,100 +848,100 @@ def busday_count(
 # `roll="raise"` is (more or less?) equivalent to `casting="safe"`
 @overload
 def busday_offset(  # type: ignore[misc]
-    dates: datetime64,
-    offsets: _TD64Like_co,
+    dates: datetime64 | dt.date,
+    offsets: _TD64Like_co | dt.timedelta,
     roll: L["raise"] = ...,
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: None = ...,
 ) -> datetime64: ...
 @overload
 def busday_offset(  # type: ignore[misc]
-    dates: _ArrayLike[datetime64],
-    offsets: _ArrayLikeTD64_co,
+    dates: _ArrayLike[datetime64] | dt.date | _NestedSequence[dt.date],
+    offsets: _ArrayLikeTD64_co | dt.timedelta | _NestedSequence[dt.timedelta],
     roll: L["raise"] = ...,
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: None = ...,
 ) -> NDArray[datetime64]: ...
 @overload
 def busday_offset(  # type: ignore[misc]
-    dates: _ArrayLike[datetime64],
-    offsets: _ArrayLike[timedelta64],
+    dates: _ArrayLike[datetime64] | dt.date | _NestedSequence[dt.date],
+    offsets: _ArrayLikeTD64_co | dt.timedelta | _NestedSequence[dt.timedelta],
     roll: L["raise"] = ...,
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: _ArrayType = ...,
 ) -> _ArrayType: ...
 @overload
 def busday_offset(  # type: ignore[misc]
-    dates: _ScalarLike_co,
-    offsets: _ScalarLike_co,
+    dates: _ScalarLike_co | dt.date,
+    offsets: _ScalarLike_co | dt.timedelta,
     roll: _RollKind,
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: None = ...,
 ) -> datetime64: ...
 @overload
 def busday_offset(  # type: ignore[misc]
-    dates: ArrayLike,
-    offsets: ArrayLike,
+    dates: ArrayLike | dt.date | _NestedSequence[dt.date],
+    offsets: ArrayLike | dt.timedelta | _NestedSequence[dt.timedelta],
     roll: _RollKind,
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: None = ...,
 ) -> NDArray[datetime64]: ...
 @overload
 def busday_offset(
-    dates: ArrayLike,
-    offsets: ArrayLike,
+    dates: ArrayLike | dt.date | _NestedSequence[dt.date],
+    offsets: ArrayLike | dt.timedelta | _NestedSequence[dt.timedelta],
     roll: _RollKind,
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: _ArrayType = ...,
 ) -> _ArrayType: ...
 
 @overload
 def is_busday(  # type: ignore[misc]
-    dates: _ScalarLike_co,
+    dates: _ScalarLike_co | dt.date,
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: None = ...,
 ) -> bool_: ...
 @overload
 def is_busday(  # type: ignore[misc]
-    dates: ArrayLike,
+    dates: ArrayLike | _NestedSequence[dt.date],
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: None = ...,
 ) -> NDArray[bool_]: ...
 @overload
 def is_busday(
-    dates: ArrayLike,
+    dates: ArrayLike | _NestedSequence[dt.date],
     weekmask: ArrayLike = ...,
-    holidays: None | ArrayLike = ...,
+    holidays: None | ArrayLike | dt.date | _NestedSequence[dt.date] = ...,
     busdaycal: None | busdaycalendar = ...,
     out: _ArrayType = ...,
 ) -> _ArrayType: ...
 
 @overload
 def datetime_as_string(  # type: ignore[misc]
-    arr: datetime64,
+    arr: datetime64 | dt.date,
     unit: None | L["auto"] | _UnitKind = ...,
     timezone: L["naive", "UTC", "local"] | dt.tzinfo = ...,
     casting: _CastingKind = ...,
 ) -> str_: ...
 @overload
 def datetime_as_string(
-    arr: _ArrayLikeDT64_co,
+    arr: _ArrayLikeDT64_co | _NestedSequence[dt.date],
     unit: None | L["auto"] | _UnitKind = ...,
     timezone: L["naive", "UTC", "local"] | dt.tzinfo = ...,
     casting: _CastingKind = ...,
diff --git a/numpy/typing/tests/data/reveal/multiarray.pyi b/numpy/typing/tests/data/reveal/multiarray.pyi
index 0e91a7afdc52..56706d8d6f91 100644
--- a/numpy/typing/tests/data/reveal/multiarray.pyi
+++ b/numpy/typing/tests/data/reveal/multiarray.pyi
@@ -1,3 +1,4 @@
+import datetime as dt
 from typing import Any, List, TypeVar
 from pathlib import Path
 
@@ -27,6 +28,10 @@ b_i8_f8_f8 = np.broadcast(AR_i8, AR_f8, AR_f8)
 
 nditer_obj: np.nditer
 
+date_scalar: dt.date
+date_seq: list[dt.date]
+timedelta_seq: list[dt.timedelta]
+
 def func(a: int) -> bool: ...
 
 reveal_type(next(b_f8))  # E: tuple[Any]
@@ -108,19 +113,26 @@ reveal_type(np.datetime_data(np.dtype(np.timedelta64)))  # E: Tuple[builtins.str
 
 reveal_type(np.busday_count("2011-01", "2011-02"))  # E: {int_}
 reveal_type(np.busday_count(["2011-01"], "2011-02"))  # E: ndarray[Any, dtype[{int_}]]
+reveal_type(np.busday_count(["2011-01"], date_scalar))  # E: ndarray[Any, dtype[{int_}]]
 
 reveal_type(np.busday_offset(M, m))  # E: datetime64
+reveal_type(np.busday_offset(date_scalar, m))  # E: datetime64
 reveal_type(np.busday_offset(M, 5))  # E: datetime64
 reveal_type(np.busday_offset(AR_M, m))  # E: ndarray[Any, dtype[datetime64]]
+reveal_type(np.busday_offset(M, timedelta_seq))  # E: ndarray[Any, dtype[datetime64]]
 reveal_type(np.busday_offset("2011-01", "2011-02", roll="forward"))  # E: datetime64
 reveal_type(np.busday_offset(["2011-01"], "2011-02", roll="forward"))  # E: ndarray[Any, dtype[datetime64]]
 
 reveal_type(np.is_busday("2012"))  # E: bool_
+reveal_type(np.is_busday(date_scalar))  # E: bool_
 reveal_type(np.is_busday(["2012"]))  # E: ndarray[Any, dtype[bool_]]
 
 reveal_type(np.datetime_as_string(M))  # E: str_
 reveal_type(np.datetime_as_string(AR_M))  # E: ndarray[Any, dtype[str_]]
 
+reveal_type(np.busdaycalendar(holidays=date_seq))  # E: busdaycalendar
+reveal_type(np.busdaycalendar(holidays=[M]))  # E: busdaycalendar
+
 reveal_type(np.compare_chararrays("a", "b", "!=", rstrip=False))  # E: ndarray[Any, dtype[bool_]]
 reveal_type(np.compare_chararrays(b"a", b"a", "==", True))  # E: ndarray[Any, dtype[bool_]]