diff --git a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/data/repository/HistoryDatesRepository.kt b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/data/repository/HistoryDatesRepository.kt
new file mode 100644
index 0000000..06bb863
--- /dev/null
+++ b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/data/repository/HistoryDatesRepository.kt
@@ -0,0 +1,15 @@
+package com.github.insanusmokrassar.PsychomatrixBase.data.repository
+
+import kotlinx.coroutines.experimental.Deferred
+import kotlinx.coroutines.experimental.channels.ReceiveChannel
+import org.joda.time.DateTime
+
+interface HistoryDatesRepository {
+
+    suspend fun openDateAddedSubscription(): ReceiveChannel<DateTime>
+    suspend fun openDateRemovedSubscription(): ReceiveChannel<DateTime>
+
+    suspend fun getDates(from: DateTime? = null, to: DateTime? = null): Deferred<List<DateTime>>
+    suspend fun removeDate(date: DateTime): Deferred<Boolean>
+
+}
\ No newline at end of file
diff --git a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/data/repository/realisations/HistoryDatesRepositoryImpl.kt b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/data/repository/realisations/HistoryDatesRepositoryImpl.kt
new file mode 100644
index 0000000..439c96a
--- /dev/null
+++ b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/data/repository/realisations/HistoryDatesRepositoryImpl.kt
@@ -0,0 +1,51 @@
+package com.github.insanusmokrassar.PsychomatrixBase.data.repository.realisations
+
+import com.github.insanusmokrassar.PsychomatrixBase.data.repository.HistoryDatesRepository
+import com.github.insanusmokrassar.PsychomatrixBase.domain.UseCases.CalculatePsychomatrixByDate
+import com.github.insanusmokrassar.PsychomatrixBase.utils.extensions.SUBSCRIPTIONS_EXTRA_SMALL
+import com.github.insanusmokrassar.PsychomatrixBase.utils.extensions.subscribe
+import kotlinx.coroutines.experimental.*
+import kotlinx.coroutines.experimental.channels.BroadcastChannel
+import kotlinx.coroutines.experimental.channels.ReceiveChannel
+import org.joda.time.DateTime
+
+abstract class HistoryDatesRepositoryImpl(
+    calculatePsychomatrixByDate: CalculatePsychomatrixByDate
+) : HistoryDatesRepository {
+    private val dateAddedBroadcast = BroadcastChannel<DateTime>(SUBSCRIPTIONS_EXTRA_SMALL)
+    private val dateRemovedBroadcast = BroadcastChannel<DateTime>(SUBSCRIPTIONS_EXTRA_SMALL)
+
+    init {
+        runBlocking {
+            calculatePsychomatrixByDate.openPsychomatrixCreatedSubscription().subscribe {
+                it.date.also {
+                    date ->
+                    onDateCalculated(date)
+                    dateAddedBroadcast.send(date)
+                }
+            }
+        }
+    }
+
+    override suspend fun openDateAddedSubscription(): ReceiveChannel<DateTime> {
+        return dateAddedBroadcast.openSubscription()
+    }
+
+    override suspend fun openDateRemovedSubscription(): ReceiveChannel<DateTime> {
+        return dateRemovedBroadcast.openSubscription()
+    }
+
+    protected abstract fun onDateCalculated(dateTime: DateTime)
+
+    override suspend fun removeDate(date: DateTime): Deferred<Boolean> {
+        return async {
+            internalRemoveDate(date).also {
+                if (it) {
+                    dateRemovedBroadcast.send(date)
+                }
+            }
+        }
+    }
+
+    protected abstract fun internalRemoveDate(date: DateTime): Boolean
+}
\ No newline at end of file
diff --git a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/di/PresentationLayerDI.kt b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/di/PresentationLayerDI.kt
index e456218..ac263af 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/di/PresentationLayerDI.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/di/PresentationLayerDI.kt
@@ -1,9 +1,11 @@
 package com.github.insanusmokrassar.PsychomatrixBase.di
 
+import com.github.insanusmokrassar.PsychomatrixBase.data.repository.HistoryDatesRepository
 import com.github.insanusmokrassar.PsychomatrixBase.presentation.presenters.DatePickerPresenter
 
 interface PresentationLayerDI : UseCasesDI {
 
     val datePickerPresenter: DatePickerPresenter
 
+    val historyDatesRepository: HistoryDatesRepository
 }
\ No newline at end of file
diff --git a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/di/realisations/PresentationLayerDIImpl.kt b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/di/realisations/PresentationLayerDIImpl.kt
index f20bb47..4cf19d6 100644
--- a/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/di/realisations/PresentationLayerDIImpl.kt
+++ b/src/main/kotlin/com/github/insanusmokrassar/PsychomatrixBase/di/realisations/PresentationLayerDIImpl.kt
@@ -5,7 +5,7 @@ import com.github.insanusmokrassar.PsychomatrixBase.di.UseCasesDI
 import com.github.insanusmokrassar.PsychomatrixBase.presentation.presenters.DatePickerPresenter
 import com.github.insanusmokrassar.PsychomatrixBase.presentation.presenters.DefaultRealisations.DatePickerPresenterImpl
 
-open class PresentationLayerDIImpl(
+abstract class PresentationLayerDIImpl(
     useCasesDI: UseCasesDI
 ) : PresentationLayerDI, UseCasesDI by useCasesDI {