diff --git a/poi/__init__.py b/poi/__init__.py
index 6cc44fe..d95b0af 100644
--- a/poi/__init__.py
+++ b/poi/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.1.4"
+__version__ = "0.1.5"
 
 
 from .sheet import Sheet  # noqa
diff --git a/poi/nodes.py b/poi/nodes.py
index 8783f42..5a77f32 100644
--- a/poi/nodes.py
+++ b/poi/nodes.py
@@ -274,7 +274,9 @@ def __init__(
         cell_width=None,
         cell_height=None,
         cell_style=None,
+        datetime_format=None,
         date_format=None,
+        time_format=None,
         *args,
         **kwargs,
     ):
@@ -285,6 +287,8 @@ def __init__(
 
         self.cell_style = cell_style or {}
         self.date_format = date_format
+        self.datetime_format = datetime_format
+        self.time_format = time_format
         self.columns = []
         for col in columns:
             assert isinstance(col, (tuple, dict))
diff --git a/poi/visitors/writer.py b/poi/visitors/writer.py
index 3a70485..3f36bbe 100644
--- a/poi/visitors/writer.py
+++ b/poi/visitors/writer.py
@@ -62,11 +62,13 @@ def get_obj_attr(obj, field):
                         val = column.render(item)
                     else:
                         val = column.render(item, column)
+                if isinstance(val, datetime.datetime):
+                    fmt["num_format"] = self.datetime_format or "yyyy-mm-dd hh:mm:ss"
+                if isinstance(val, datetime.date):
+                    fmt["num_format"] = self.date_format or "yyyy-mm-dd"
+                if isinstance(val, datetime.time):
+                    fmt["num_format"] = self.time_format or "hh:mm:ss"
 
-                if self.date_format and isinstance(
-                    val, (datetime.date, datetime.datetime)
-                ):
-                    fmt["num_format"] = self.date_format
                 writer.write(row + i + 1, col + j, val, {**self.cell_format, **fmt})
 
     @visitor.register
diff --git a/pyproject.toml b/pyproject.toml
index 462dbd9..373db29 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "poi"
-version = "0.1.4"
+version = "0.1.5"
 description = ""
 authors = ["Ryan Wang <hwwangwang@gmail.com>"]
 
diff --git a/tests/test_poi.py b/tests/test_poi.py
index 5b951d6..05ed410 100644
--- a/tests/test_poi.py
+++ b/tests/test_poi.py
@@ -6,7 +6,7 @@
 
 
 def test_version():
-    assert __version__ == "0.1.4"
+    assert __version__ == "0.1.5"
 
 
 def assert_match_snapshot(sheet: Sheet, snapshot):