diff --git a/clock/src/main/java/com/maxkeppeler/sheets/clock/ClockState.kt b/clock/src/main/java/com/maxkeppeler/sheets/clock/ClockState.kt
index 0d8c6018..290a5729 100644
--- a/clock/src/main/java/com/maxkeppeler/sheets/clock/ClockState.kt
+++ b/clock/src/main/java/com/maxkeppeler/sheets/clock/ClockState.kt
@@ -53,6 +53,9 @@ internal class ClockState(
     var timeTextValues by mutableStateOf(getTimeInTextValues())
     val keys by mutableStateOf(getInputKeys())
     var disabledKeys by mutableStateOf(getCurrentDisabledKeys())
+    var valid by mutableStateOf(isValid())
+
+    private fun isValid(): Boolean = config.boundary?.let { time in it } ?: true
 
     private fun isInit24HourFormat(): Boolean {
         return config.is24HourFormat ?: DateFormat.is24HourFormat(context)
@@ -93,6 +96,11 @@ internal class ClockState(
 
     private fun refreshTimeValue() {
         time = getTimeOfTextValues()
+        checkValid()
+    }
+
+    private fun checkValid() {
+        valid = isValid()
     }
 
     fun onChange12HourFormatValue(newIsAm: Boolean) {
diff --git a/clock/src/main/java/com/maxkeppeler/sheets/clock/ClockView.kt b/clock/src/main/java/com/maxkeppeler/sheets/clock/ClockView.kt
index 81017548..0b63418a 100644
--- a/clock/src/main/java/com/maxkeppeler/sheets/clock/ClockView.kt
+++ b/clock/src/main/java/com/maxkeppeler/sheets/clock/ClockView.kt
@@ -28,6 +28,7 @@ import com.maxkeppeker.sheets.core.views.base.FrameBase
 import com.maxkeppeler.sheets.clock.models.ClockConfig
 import com.maxkeppeler.sheets.clock.models.ClockSelection
 import com.maxkeppeler.sheets.clock.views.KeyboardComponent
+import com.maxkeppeler.sheets.clock.views.TimeHintComponent
 import com.maxkeppeler.sheets.clock.views.TimeValueComponent
 
 /**
@@ -61,6 +62,10 @@ fun ClockView(
                 onGroupClick = clockState::onValueGroupClick,
                 onAm = clockState::onChange12HourFormatValue,
             )
+            TimeHintComponent(
+                valid = clockState.valid,
+                boundary = config.boundary,
+            )
             KeyboardComponent(
                 config = config,
                 keys = clockState.keys,
@@ -75,6 +80,7 @@ fun ClockView(
             selection = selection,
             onNegative = { selection.onNegativeClick?.invoke() },
             onPositive = clockState::onFinish,
+            onPositiveValid = clockState.valid,
             onClose = sheetState::finish
         )
     }
diff --git a/clock/src/main/java/com/maxkeppeler/sheets/clock/models/ClockConfig.kt b/clock/src/main/java/com/maxkeppeler/sheets/clock/models/ClockConfig.kt
index af961e9b..e0ee3974 100644
--- a/clock/src/main/java/com/maxkeppeler/sheets/clock/models/ClockConfig.kt
+++ b/clock/src/main/java/com/maxkeppeler/sheets/clock/models/ClockConfig.kt
@@ -23,11 +23,13 @@ import java.time.LocalTime
 /**
  * The general configuration for the clock dialog.
  * @param defaultTime The default time.
+ * @param boundary Optional [ClosedRange] of [LocalTime] representing the time boundary
  * @param is24HourFormat If the 24HourFormat is enabled.
  * @param icons The style of icons that are used for dialog/ view-specific icons.
  */
 data class ClockConfig(
     val defaultTime: LocalTime? = null,
+    val boundary: ClosedRange<LocalTime>? = null,
     val is24HourFormat: Boolean? = null,
     override val icons: LibIcons = DEFAULT_ICON_STYLE,
 ) : BaseConfigs()
\ No newline at end of file
diff --git a/clock/src/main/java/com/maxkeppeler/sheets/clock/views/TimeHintComponent.kt b/clock/src/main/java/com/maxkeppeler/sheets/clock/views/TimeHintComponent.kt
new file mode 100644
index 00000000..509c284c
--- /dev/null
+++ b/clock/src/main/java/com/maxkeppeler/sheets/clock/views/TimeHintComponent.kt
@@ -0,0 +1,71 @@
+/*
+ *  Copyright (C) 2022. Maximilian Keppeler (https://www.maxkeppeler.com)
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+@file:OptIn(ExperimentalTextApi::class, ExperimentalMaterial3Api::class)
+
+package com.maxkeppeler.sheets.clock.views
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.dimensionResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.ExperimentalTextApi
+import androidx.compose.ui.text.style.TextAlign
+import com.maxkeppeler.sheets.clock.R
+import java.time.LocalTime
+import java.time.format.DateTimeFormatter
+import java.time.format.FormatStyle
+import com.maxkeppeler.sheets.core.R as RC
+
+/**
+ * A component that displays a hint that the current time is out of the defined boundary, if set and invalid.
+ *
+ * @param valid Boolean representing the validity of the time
+ * @param boundary Optional [ClosedRange] of [LocalTime] representing the time boundary
+ */
+@Composable
+internal fun TimeHintComponent(
+    valid: Boolean,
+    boundary: ClosedRange<LocalTime>? = null
+) {
+    if (valid || boundary == null) return
+
+    val formatter = remember { DateTimeFormatter.ofLocalizedTime(FormatStyle.SHORT) }
+    val startTime = remember(boundary) { boundary.start.format(formatter) }
+    val endTime = remember(boundary) { boundary.endInclusive.format(formatter) }
+
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(bottom = dimensionResource(RC.dimen.scd_normal_150)),
+        horizontalArrangement = Arrangement.Center,
+        verticalAlignment = Alignment.Bottom
+    ) {
+        Text(
+            text = stringResource(R.string.scd_clock_dialog_boundary_hint, startTime, endTime),
+            textAlign = TextAlign.Center,
+            style = MaterialTheme.typography.bodySmall
+        )
+    }
+}
\ No newline at end of file
diff --git a/clock/src/main/res/values-de-rDE/strings.xml b/clock/src/main/res/values-de-rDE/strings.xml
index 0f049201..292249e6 100644
--- a/clock/src/main/res/values-de-rDE/strings.xml
+++ b/clock/src/main/res/values-de-rDE/strings.xml
@@ -9,5 +9,6 @@
     <string name="scd_clock_dialog_pm" translatable="true">PM</string>
     <string name="scd_clock_dialog_next_value" translatable="true">Nächster Wert</string>
     <string name="scd_clock_dialog_previous_value" translatable="true">Letzter Wert</string>
+    <string name="scd_clock_dialog_boundary_hint" translatable="true">Muss zwischen %s und %s sein</string>
 
 </resources>
\ No newline at end of file
diff --git a/clock/src/main/res/values/strings.xml b/clock/src/main/res/values/strings.xml
index 198e64b7..2eec9ee5 100644
--- a/clock/src/main/res/values/strings.xml
+++ b/clock/src/main/res/values/strings.xml
@@ -10,5 +10,6 @@
     <string name="scd_clock_dialog_pm" translatable="true">PM</string>
     <string name="scd_clock_dialog_next_value" translatable="true">Next value</string>
     <string name="scd_clock_dialog_previous_value" translatable="true">Previous value</string>
+    <string name="scd_clock_dialog_boundary_hint" translatable="true">Must be between %s and %s</string>
 
 </resources>
\ No newline at end of file