diff --git a/.strict-typing b/.strict-typing
index 648379875da..b27475b69a1 100644
--- a/.strict-typing
+++ b/.strict-typing
@@ -397,6 +397,7 @@ homeassistant.components.tile.*
 homeassistant.components.tilt_ble.*
 homeassistant.components.time.*
 homeassistant.components.time_date.*
+homeassistant.components.tod.*
 homeassistant.components.todo.*
 homeassistant.components.tolo.*
 homeassistant.components.tplink.*
diff --git a/homeassistant/components/tod/binary_sensor.py b/homeassistant/components/tod/binary_sensor.py
index c3f2c75e07b..d274960c211 100644
--- a/homeassistant/components/tod/binary_sensor.py
+++ b/homeassistant/components/tod/binary_sensor.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 from collections.abc import Callable
 from datetime import datetime, time, timedelta
 import logging
-from typing import TYPE_CHECKING, Any
+from typing import TYPE_CHECKING, Any, Literal, TypeGuard
 
 import voluptuous as vol
 
@@ -35,6 +35,8 @@ from .const import (
     CONF_BEFORE_TIME,
 )
 
+SunEventType = Literal["sunrise", "sunset"]
+
 _LOGGER = logging.getLogger(__name__)
 
 ATTR_AFTER = "after"
@@ -60,7 +62,7 @@ async def async_setup_entry(
 ) -> None:
     """Initialize Times of the Day config entry."""
     if hass.config.time_zone is None:
-        _LOGGER.error("Timezone is not set in Home Assistant configuration")
+        _LOGGER.error("Timezone is not set in Home Assistant configuration")  # type: ignore[unreachable]
         return
 
     after = cv.time(config_entry.options[CONF_AFTER_TIME])
@@ -83,7 +85,7 @@ async def async_setup_platform(
 ) -> None:
     """Set up the ToD sensors."""
     if hass.config.time_zone is None:
-        _LOGGER.error("Timezone is not set in Home Assistant configuration")
+        _LOGGER.error("Timezone is not set in Home Assistant configuration")  # type: ignore[unreachable]
         return
 
     after = config[CONF_AFTER]
@@ -97,7 +99,7 @@ async def async_setup_platform(
     async_add_entities([sensor])
 
 
-def _is_sun_event(sun_event):
+def _is_sun_event(sun_event: time | SunEventType) -> TypeGuard[SunEventType]:
     """Return true if event is sun event not time."""
     return sun_event in (SUN_EVENT_SUNRISE, SUN_EVENT_SUNSET)
 
@@ -172,8 +174,8 @@ class TodSensor(BinarySensorEntity):
             # Calculate the today's event utc time or
             # if not available take next
             after_event_date = get_astral_event_date(
-                self.hass, str(self._after), nowutc
-            ) or get_astral_event_next(self.hass, str(self._after), nowutc)
+                self.hass, self._after, nowutc
+            ) or get_astral_event_next(self.hass, self._after, nowutc)
         else:
             # Convert local time provided to UTC today
             # datetime.combine(date, time, tzinfo) is not supported
@@ -188,13 +190,13 @@ class TodSensor(BinarySensorEntity):
             # Calculate the today's event utc time or  if not available take
             # next
             before_event_date = get_astral_event_date(
-                self.hass, str(self._before), nowutc
-            ) or get_astral_event_next(self.hass, str(self._before), nowutc)
+                self.hass, self._before, nowutc
+            ) or get_astral_event_next(self.hass, self._before, nowutc)
             # Before is earlier than after
             if before_event_date < after_event_date:
                 # Take next day for before
                 before_event_date = get_astral_event_next(
-                    self.hass, str(self._before), after_event_date
+                    self.hass, self._before, after_event_date
                 )
         else:
             # Convert local time provided to UTC today, see above
@@ -248,7 +250,7 @@ class TodSensor(BinarySensorEntity):
             assert self._time_before is not None
         if _is_sun_event(self._after):
             self._time_after = get_astral_event_next(
-                self.hass, str(self._after), self._time_after - self._after_offset
+                self.hass, self._after, self._time_after - self._after_offset
             )
             self._time_after += self._after_offset
         else:
@@ -259,7 +261,7 @@ class TodSensor(BinarySensorEntity):
 
         if _is_sun_event(self._before):
             self._time_before = get_astral_event_next(
-                self.hass, str(self._before), self._time_before - self._before_offset
+                self.hass, self._before, self._time_before - self._before_offset
             )
             self._time_before += self._before_offset
         else:
@@ -274,7 +276,7 @@ class TodSensor(BinarySensorEntity):
         self._calculate_next_update()
 
         @callback
-        def _clean_up_listener():
+        def _clean_up_listener() -> None:
             if self._unsub_update is not None:
                 self._unsub_update()
                 self._unsub_update = None
diff --git a/mypy.ini b/mypy.ini
index 2766b47b471..e3bcca10837 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -3732,6 +3732,16 @@ disallow_untyped_defs = true
 warn_return_any = true
 warn_unreachable = true
 
+[mypy-homeassistant.components.tod.*]
+check_untyped_defs = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+disallow_untyped_calls = true
+disallow_untyped_decorators = true
+disallow_untyped_defs = true
+warn_return_any = true
+warn_unreachable = true
+
 [mypy-homeassistant.components.todo.*]
 check_untyped_defs = true
 disallow_incomplete_defs = true