diff --git a/core/datetime/.gitignore b/core/datetime/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/core/datetime/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/core/datetime/build.gradle b/core/datetime/build.gradle
new file mode 100644
index 00000000..6b4e35e9
--- /dev/null
+++ b/core/datetime/build.gradle
@@ -0,0 +1,16 @@
+plugins {
+    id "moop.android.library"
+}
+
+android {
+    namespace "soup.movie.datetime"
+}
+
+dependencies {
+    implementation projects.core.kotlin
+    implementation projects.data.model
+
+    implementation libs.kotlin.stdlib
+
+    testImplementation projects.testing
+}
diff --git a/core/datetime/src/main/AndroidManifest.xml b/core/datetime/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..8072ee00
--- /dev/null
+++ b/core/datetime/src/main/AndroidManifest.xml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest />
diff --git a/domain/src/main/java/soup/movie/domain/movie/DateHelper.kt b/core/datetime/src/main/java/soup/movie/datetime/DateHelper.kt
similarity index 98%
rename from domain/src/main/java/soup/movie/domain/movie/DateHelper.kt
rename to core/datetime/src/main/java/soup/movie/datetime/DateHelper.kt
index 73ab7d90..cc021576 100644
--- a/domain/src/main/java/soup/movie/domain/movie/DateHelper.kt
+++ b/core/datetime/src/main/java/soup/movie/datetime/DateHelper.kt
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package soup.movie.domain.movie
+package soup.movie.datetime
 
 import java.time.DayOfWeek
 import java.time.LocalDate
diff --git a/domain/src/test/kotlin/soup/movie/domain/movie/DataHelperTest.kt b/core/datetime/src/test/java/soup/movie/datetime/DataHelperTest.kt
similarity index 98%
rename from domain/src/test/kotlin/soup/movie/domain/movie/DataHelperTest.kt
rename to core/datetime/src/test/java/soup/movie/datetime/DataHelperTest.kt
index 57228354..1961f915 100644
--- a/domain/src/test/kotlin/soup/movie/domain/movie/DataHelperTest.kt
+++ b/core/datetime/src/test/java/soup/movie/datetime/DataHelperTest.kt
@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package soup.movie.domain.movie
+package soup.movie.datetime
 
 import org.junit.Assert.assertEquals
 import org.junit.Test
diff --git a/domain/build.gradle b/domain/build.gradle
index d5b67e8a..2d96b43f 100644
--- a/domain/build.gradle
+++ b/domain/build.gradle
@@ -8,6 +8,7 @@ android {
 
 dependencies {
     implementation projects.core.kotlin
+    implementation projects.core.datetime
     implementation projects.data.model
 
     implementation libs.kotlin.stdlib
diff --git a/domain/src/main/java/soup/movie/domain/movie/MovieExt.kt b/domain/src/main/java/soup/movie/domain/movie/MovieExt.kt
index 56a63087..687367d5 100644
--- a/domain/src/main/java/soup/movie/domain/movie/MovieExt.kt
+++ b/domain/src/main/java/soup/movie/domain/movie/MovieExt.kt
@@ -15,7 +15,7 @@
  */
 package soup.movie.domain.movie
 
-import soup.movie.model.MovieDetailModel
+import soup.movie.datetime.today
 import soup.movie.model.MovieModel
 import java.time.LocalDate
 import java.time.temporal.ChronoUnit
@@ -36,8 +36,8 @@ private fun MovieModel.hasOpenDate(): Boolean = openDate.toLocalDate() != null
 
 fun MovieModel.isDDay(): Boolean = isPlan and hasOpenDate()
 
-fun MovieDetailModel.screenDays(): Int {
-    val openDate = movie.openDate.toLocalDate()
+fun MovieModel.screenDays(): Int {
+    val openDate = openDate.toLocalDate()
     if (openDate != null) {
         return ChronoUnit.DAYS.between(openDate, today()).toInt()
     }
diff --git a/feature/detail/impl/build.gradle b/feature/detail/impl/build.gradle
index f4ce0faa..ee9a53b2 100644
--- a/feature/detail/impl/build.gradle
+++ b/feature/detail/impl/build.gradle
@@ -16,6 +16,7 @@ dependencies {
     implementation projects.core.imageloading.api
     implementation projects.core.logger
     implementation projects.core.resources
+    implementation projects.core.datetime
     implementation projects.data.repository.api
     implementation projects.data.model
     implementation projects.domain
diff --git a/feature/detail/impl/src/main/java/soup/movie/feature/detail/impl/DetailViewModel.kt b/feature/detail/impl/src/main/java/soup/movie/feature/detail/impl/DetailViewModel.kt
index b4573e2d..2b03c648 100644
--- a/feature/detail/impl/src/main/java/soup/movie/feature/detail/impl/DetailViewModel.kt
+++ b/feature/detail/impl/src/main/java/soup/movie/feature/detail/impl/DetailViewModel.kt
@@ -27,9 +27,9 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import soup.movie.common.DefaultDispatcher
 import soup.movie.data.repository.MovieRepository
-import soup.movie.domain.movie.MM_DD
+import soup.movie.datetime.MM_DD
+import soup.movie.datetime.yesterday
 import soup.movie.domain.movie.screenDays
-import soup.movie.domain.movie.yesterday
 import soup.movie.log.Logger
 import soup.movie.model.MovieDetailModel
 import soup.movie.model.OpenDateAlarmModel
@@ -96,7 +96,7 @@ class DetailViewModel @Inject constructor(
                     rank = rank,
                     rankDate = yesterday().MM_DD(),
                     audience = audiAcc,
-                    screenDays = screenDays(),
+                    screenDays = movie.screenDays(),
                 ),
             )
         }
diff --git a/feature/tasks/impl/build.gradle b/feature/tasks/impl/build.gradle
index 86d57144..fe5ca73d 100644
--- a/feature/tasks/impl/build.gradle
+++ b/feature/tasks/impl/build.gradle
@@ -12,6 +12,7 @@ dependencies {
     implementation projects.core.kotlin
     implementation projects.core.logger
     implementation projects.core.resources
+    implementation projects.core.datetime
     implementation projects.data.repository.api
     implementation projects.data.model
     implementation projects.domain
diff --git a/feature/tasks/impl/src/main/java/soup/movie/feature/tasks/impl/AnnounceOpenDateTasksImpl.kt b/feature/tasks/impl/src/main/java/soup/movie/feature/tasks/impl/AnnounceOpenDateTasksImpl.kt
index 998ebb72..8910f6fe 100644
--- a/feature/tasks/impl/src/main/java/soup/movie/feature/tasks/impl/AnnounceOpenDateTasksImpl.kt
+++ b/feature/tasks/impl/src/main/java/soup/movie/feature/tasks/impl/AnnounceOpenDateTasksImpl.kt
@@ -19,7 +19,7 @@ import androidx.work.BackoffPolicy
 import androidx.work.ExistingPeriodicWorkPolicy
 import androidx.work.PeriodicWorkRequestBuilder
 import androidx.work.WorkManager
-import soup.movie.domain.movie.currentTime
+import soup.movie.datetime.currentTime
 import soup.movie.feature.tasks.AnnounceOpenDateTasks
 import java.time.temporal.ChronoUnit
 import java.util.concurrent.TimeUnit
diff --git a/feature/tasks/impl/src/main/java/soup/movie/feature/tasks/impl/AnnounceOpenDateUseCase.kt b/feature/tasks/impl/src/main/java/soup/movie/feature/tasks/impl/AnnounceOpenDateUseCase.kt
index f5f02886..1eea4d32 100644
--- a/feature/tasks/impl/src/main/java/soup/movie/feature/tasks/impl/AnnounceOpenDateUseCase.kt
+++ b/feature/tasks/impl/src/main/java/soup/movie/feature/tasks/impl/AnnounceOpenDateUseCase.kt
@@ -16,9 +16,9 @@
 package soup.movie.feature.tasks.impl
 
 import soup.movie.data.repository.MovieRepository
-import soup.movie.domain.movie.YYYY_MM_DD
-import soup.movie.domain.movie.plusDaysTo
-import soup.movie.domain.movie.today
+import soup.movie.datetime.YYYY_MM_DD
+import soup.movie.datetime.plusDaysTo
+import soup.movie.datetime.today
 import soup.movie.feature.notification.NotificationBuilder
 import soup.movie.model.OpenDateAlarmModel
 import java.time.DayOfWeek