diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/config/ProfileConfigUI.kt b/app/src/main/java/pl/szczodrzynski/edziennik/config/ProfileConfigUI.kt
index 187cb6bd..743872b0 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/config/ProfileConfigUI.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/config/ProfileConfigUI.kt
@@ -69,4 +69,19 @@ class ProfileConfigUI(private val config: ProfileConfig) {
     var messagesGreetingText: String?
         get() { mMessagesGreetingText = mMessagesGreetingText ?: config.values["messagesGreetingText"]; return mMessagesGreetingText }
         set(value) { config.set("messagesGreetingText", value); mMessagesGreetingText = value }
+
+    private var mTimetableShowAttendance: Boolean? = null
+    var timetableShowAttendance: Boolean
+        get() { mTimetableShowAttendance = mTimetableShowAttendance ?: config.values.get("timetableShowAttendance", true); return mTimetableShowAttendance ?: true }
+        set(value) { config.set("timetableShowAttendance", value); mTimetableShowAttendance = value }
+
+    private var mTimetableShowEvents: Boolean? = null
+    var timetableShowEvents: Boolean
+        get() { mTimetableShowEvents = mTimetableShowEvents ?: config.values.get("timetableShowEvents", true); return mTimetableShowEvents ?: true }
+        set(value) { config.set("timetableShowEvents", value); mTimetableShowEvents = value }
+
+    private var mTimetableTrimHourRange: Boolean? = null
+    var timetableTrimHourRange: Boolean
+        get() { mTimetableTrimHourRange = mTimetableTrimHourRange ?: config.values.get("timetableTrimHourRange", false); return mTimetableTrimHourRange ?: false }
+        set(value) { config.set("timetableTrimHourRange", value); mTimetableTrimHourRange = value }
 }
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/settings/TimetableConfigDialog.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/settings/TimetableConfigDialog.kt
new file mode 100644
index 00000000..b784165b
--- /dev/null
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/dialogs/settings/TimetableConfigDialog.kt
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) Kuba Szczodrzyński 2022-10-7.
+ */
+
+package pl.szczodrzynski.edziennik.ui.dialogs.settings
+
+import android.view.LayoutInflater
+import androidx.appcompat.app.AppCompatActivity
+import pl.szczodrzynski.edziennik.MainActivity
+import pl.szczodrzynski.edziennik.R
+import pl.szczodrzynski.edziennik.databinding.TimetableConfigDialogBinding
+import pl.szczodrzynski.edziennik.ext.Intent
+import pl.szczodrzynski.edziennik.ext.onClick
+import pl.szczodrzynski.edziennik.ui.dialogs.base.ConfigDialog
+import pl.szczodrzynski.edziennik.ui.timetable.TimetableFragment
+
+class TimetableConfigDialog(
+    activity: AppCompatActivity,
+    reloadOnDismiss: Boolean = true,
+    onShowListener: ((tag: String) -> Unit)? = null,
+    onDismissListener: ((tag: String) -> Unit)? = null,
+) : ConfigDialog<TimetableConfigDialogBinding>(
+    activity,
+    reloadOnDismiss,
+    onShowListener,
+    onDismissListener,
+) {
+
+    override val TAG = "TimetableConfigDialog"
+
+    override fun getTitleRes() = R.string.menu_timetable_config
+    override fun inflate(layoutInflater: LayoutInflater) =
+        TimetableConfigDialogBinding.inflate(layoutInflater)
+
+    private val profileConfig by lazy { app.config.getFor(app.profileId).ui }
+
+    override suspend fun loadConfig() {
+        b.config = profileConfig
+    }
+
+    override suspend fun saveConfig() {
+        activity.sendBroadcast(Intent(TimetableFragment.ACTION_RELOAD_PAGES))
+    }
+}
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/timetable/TimetableDayFragment.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/timetable/TimetableDayFragment.kt
index 754bd4f5..a2d99247 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/timetable/TimetableDayFragment.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/timetable/TimetableDayFragment.kt
@@ -36,6 +36,7 @@ import pl.szczodrzynski.edziennik.ui.timetable.TimetableFragment.Companion.DEFAU
 import pl.szczodrzynski.edziennik.utils.managers.NoteManager
 import pl.szczodrzynski.edziennik.utils.models.Date
 import pl.szczodrzynski.edziennik.utils.models.Time
+import pl.szczodrzynski.edziennik.utils.mutableLazy
 import java.util.*
 import kotlin.coroutines.CoroutineContext
 import kotlin.math.min
@@ -71,8 +72,9 @@ class TimetableDayFragment : LazyFragment(), CoroutineScope {
 
     // find SwipeRefreshLayout in the hierarchy
     private val refreshLayout by lazy { view?.findParentById(R.id.refreshLayout) }
+    private val profileConfig by lazy { app.config.forProfile().ui }
 
-    private val dayView by lazy {
+    private val dayViewDelegate = mutableLazy {
         val dayView = DayView(activity, DayViewConfig(
             startHour = startHour,
             endHour = endHour,
@@ -85,8 +87,9 @@ class TimetableDayFragment : LazyFragment(), CoroutineScope {
             eventMargin = 2.dp
         ), true)
         dayView.setPadding(10.dp)
-        return@lazy dayView
+        return@mutableLazy dayView
     }
+    private val dayView by dayViewDelegate
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         activity = (getActivity() as MainActivity?) ?: return null
@@ -173,8 +176,19 @@ class TimetableDayFragment : LazyFragment(), CoroutineScope {
             return
         }
 
+        if (dayViewDelegate.isInitialized())
+            b.dayFrame.removeView(dayView)
+
+        val lessonsActual = lessons.filter { it.type != Lesson.TYPE_NO_LESSONS }
+
+        if (profileConfig.timetableTrimHourRange) {
+            dayViewDelegate.deinitialize()
+            // end/start defaults are swapped on purpose
+            startHour = lessonsActual.minOf { it.displayStartTime?.hour ?: DEFAULT_END_HOUR }
+            endHour = lessonsActual.maxOf { it.displayEndTime?.hour?.plus(1) ?: DEFAULT_START_HOUR }
+        }
+
         b.scrollView.isVisible = true
-        b.dayFrame.removeView(dayView)
         b.dayFrame.addView(dayView, 0)
 
         // Inflate a label view for each hour the day view will display
@@ -195,7 +209,7 @@ class TimetableDayFragment : LazyFragment(), CoroutineScope {
 
         lessons.forEach { it.showAsUnseen = !it.seen }
 
-        buildLessonViews(lessons.filter { it.type != Lesson.TYPE_NO_LESSONS }, events, attendanceList)
+        buildLessonViews(lessonsActual, events, attendanceList)
     }
 
     private fun buildLessonViews(lessons: List<LessonFull>, events: List<EventFull>, attendanceList: List<AttendanceFull>) {
@@ -215,7 +229,10 @@ class TimetableDayFragment : LazyFragment(), CoroutineScope {
         val colorSecondary = android.R.attr.textColorSecondary.resolveAttr(activity)
 
         for (lesson in lessons) {
-            val attendance = attendanceList.find { it.startTime == lesson.startTime }
+            val attendance = if (profileConfig.timetableShowAttendance)
+                attendanceList.find { it.startTime == lesson.startTime }
+            else
+                null
             val startTime = lesson.displayStartTime ?: continue
             val endTime = lesson.displayEndTime ?: continue
 
@@ -245,23 +262,20 @@ class TimetableDayFragment : LazyFragment(), CoroutineScope {
                 }
             }
 
-            val eventList = events.filter { it.time != null && it.time == lesson.displayStartTime }.take(3)
-            eventList.getOrNull(0).let {
-                lb.event1.visibility = if (it == null) View.GONE else View.VISIBLE
-                lb.event1.background = it?.let {
-                    R.drawable.bg_circle.resolveDrawable(activity).setTintColor(it.eventColor)
+            val eventIcons = listOf(lb.event1, lb.event2, lb.event3)
+            if (profileConfig.timetableShowEvents) {
+                val eventList = events.filter { it.time != null && it.time == lesson.displayStartTime }.take(3)
+                for ((i, eventIcon) in eventIcons.withIndex()) {
+                    eventList.getOrNull(i).let {
+                        eventIcon.isVisible = it != null
+                        eventIcon.background = it?.let {
+                            R.drawable.bg_circle.resolveDrawable(activity).setTintColor(it.eventColor)
+                        }
+                    }
                 }
-            }
-            eventList.getOrNull(1).let {
-                lb.event2.visibility = if (it == null) View.GONE else View.VISIBLE
-                lb.event2.background = it?.let {
-                    R.drawable.bg_circle.resolveDrawable(activity).setTintColor(it.eventColor)
-                }
-            }
-            eventList.getOrNull(2).let {
-                lb.event3.visibility = if (it == null) View.GONE else View.VISIBLE
-                lb.event3.background = it?.let {
-                    R.drawable.bg_circle.resolveDrawable(activity).setTintColor(it.eventColor)
+            } else {
+                for (eventIcon in eventIcons) {
+                    eventIcon.visibility = View.GONE
                 }
             }
 
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/ui/timetable/TimetableFragment.kt b/app/src/main/java/pl/szczodrzynski/edziennik/ui/timetable/TimetableFragment.kt
index b046ff68..fc2221bc 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/ui/timetable/TimetableFragment.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/ui/timetable/TimetableFragment.kt
@@ -26,6 +26,7 @@ import pl.szczodrzynski.edziennik.R
 import pl.szczodrzynski.edziennik.data.db.entity.Metadata
 import pl.szczodrzynski.edziennik.databinding.FragmentTimetableV2Binding
 import pl.szczodrzynski.edziennik.ext.getSchoolYearConstrains
+import pl.szczodrzynski.edziennik.ui.dialogs.settings.TimetableConfigDialog
 import pl.szczodrzynski.edziennik.ui.event.EventManualDialog
 import pl.szczodrzynski.edziennik.utils.models.Date
 import pl.szczodrzynski.navlib.bottomsheet.items.BottomSheetPrimaryItem
@@ -52,6 +53,7 @@ class TimetableFragment : Fragment(), CoroutineScope {
 
     private var fabShown = false
     private val items = mutableListOf<Date>()
+    private val profileConfig by lazy { app.config.forProfile().ui }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         activity = (getActivity() as MainActivity?) ?: return null
@@ -128,8 +130,8 @@ class TimetableFragment : Fragment(), CoroutineScope {
             }
 
             val lessonRanges = app.db.lessonRangeDao().getAllNow(App.profileId)
-            startHour = lessonRanges.map { it.startTime.hour }.minOrNull() ?: DEFAULT_START_HOUR
-            endHour = lessonRanges.map { it.endTime.hour }.maxOrNull()?.plus(1) ?: DEFAULT_END_HOUR
+            startHour = lessonRanges.minOfOrNull { it.startTime.hour } ?: DEFAULT_START_HOUR
+            endHour = lessonRanges.maxOfOrNull { it.endTime.hour }?.plus(1) ?: DEFAULT_END_HOUR
         }
         deferred.await()
         if (!isAdded)
@@ -208,6 +210,13 @@ class TimetableFragment : Fragment(), CoroutineScope {
                             activity.bottomSheet.close()
                             GenerateBlockTimetableDialog(activity)
                         }),
+                BottomSheetPrimaryItem(true)
+                        .withTitle(R.string.menu_timetable_config)
+                        .withIcon(CommunityMaterial.Icon.cmd_cog_outline)
+                        .withOnClickListener {
+                            activity.bottomSheet.close()
+                            TimetableConfigDialog(activity, false, null, null).show()
+                        },
                 BottomSheetSeparatorItem(true),
                 BottomSheetPrimaryItem(true)
                         .withTitle(R.string.menu_mark_as_read)
diff --git a/app/src/main/java/pl/szczodrzynski/edziennik/utils/MutableLazy.kt b/app/src/main/java/pl/szczodrzynski/edziennik/utils/MutableLazy.kt
index cf000e1f..f742c185 100644
--- a/app/src/main/java/pl/szczodrzynski/edziennik/utils/MutableLazy.kt
+++ b/app/src/main/java/pl/szczodrzynski/edziennik/utils/MutableLazy.kt
@@ -19,7 +19,6 @@ class MutableLazyImpl<T>(initializer: () -> T, lock: Any? = null) {
         return synchronized(lock) {
             val typedValue = initializer!!()
             _value = typedValue
-            initializer = null
             typedValue
         }
     }
@@ -29,7 +28,11 @@ class MutableLazyImpl<T>(initializer: () -> T, lock: Any? = null) {
 
     fun isInitialized() = _value !== UNINITIALIZED_VALUE
 
+    fun deinitialize() {
+        _value = UNINITIALIZED_VALUE
+    }
+
     override fun toString() = if (isInitialized()) _value.toString() else "ChangeableLazy value not initialized yet."
 }
 
-fun <T> mutableLazy(initializer: () -> T): MutableLazyImpl<T> = MutableLazyImpl(initializer)
\ No newline at end of file
+fun <T> mutableLazy(initializer: () -> T): MutableLazyImpl<T> = MutableLazyImpl(initializer)
diff --git a/app/src/main/res/layout/dialog_config_agenda.xml b/app/src/main/res/layout/dialog_config_agenda.xml
index f17b5989..b51464e2 100644
--- a/app/src/main/res/layout/dialog_config_agenda.xml
+++ b/app/src/main/res/layout/dialog_config_agenda.xml
@@ -31,7 +31,7 @@
             <TextView
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
-                android:text="@string/agenda_config_appearance"
+                android:text="@string/config_appearance"
                 android:textAppearance="@style/NavView.TextView.Subtitle" />
 
             <com.google.android.material.checkbox.MaterialCheckBox
diff --git a/app/src/main/res/layout/timetable_config_dialog.xml b/app/src/main/res/layout/timetable_config_dialog.xml
new file mode 100644
index 00000000..b248e793
--- /dev/null
+++ b/app/src/main/res/layout/timetable_config_dialog.xml
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (c) Kuba Szczodrzyński 2022-10-7.
+  -->
+
+<layout xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <data>
+
+        <variable
+            name="config"
+            type="pl.szczodrzynski.edziennik.config.ProfileConfigUI" />
+    </data>
+
+    <ScrollView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:padding="24dp">
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/config_appearance"
+                android:textAppearance="@style/NavView.TextView.Subtitle" />
+
+            <com.google.android.material.checkbox.MaterialCheckBox
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="8dp"
+                android:checked="@={config.timetableShowEvents}"
+                android:minHeight="32dp"
+                android:text="@string/timetable_config_show_events" />
+
+            <com.google.android.material.checkbox.MaterialCheckBox
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="8dp"
+                android:checked="@={config.timetableShowAttendance}"
+                android:minHeight="32dp"
+                android:text="@string/timetable_config_show_attendance" />
+
+            <com.google.android.material.checkbox.MaterialCheckBox
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="8dp"
+                android:checked="@={config.timetableTrimHourRange}"
+                android:minHeight="32dp"
+                android:text="@string/timetable_config_trim_hour_range" />
+        </LinearLayout>
+    </ScrollView>
+</layout>
diff --git a/app/src/main/res/values-en/strings.xml b/app/src/main/res/values-en/strings.xml
index 851129f9..5dad0cb3 100644
--- a/app/src/main/res/values-en/strings.xml
+++ b/app/src/main/res/values-en/strings.xml
@@ -1383,7 +1383,7 @@
     <string name="notes_type_grade">Grade</string>
     <string name="privacy_policy_dialog_html"><![CDATA[By using the application, you confirm that you have <a href="https://szkolny.eu/privacy-policy">read the Privacy Policy</a> and accept its provisions.<br /><br />The authors of the application are not responsible for the use of the Szkolny.eu application.]]></string>
     <string name="login_chooser_version_format">Szkolny.eu v%s\n%s</string>
-    <string name="agenda_config_appearance">Appearance</string>
+    <string name="config_appearance">Appearance</string>
     <string name="agenda_config_elearning">Online learning</string>
     <string name="event_type_elearning">online lesson</string>
     <string name="menu_messages_config">Messages settings</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index a8f81073..3cf6221c 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1424,7 +1424,7 @@
     <string name="privacy_policy_dialog_html"><![CDATA[Korzystając z aplikacji potwierdzasz <a href="https://szkolny.eu/privacy-policy">przeczytanie Polityki prywatności</a> i akceptujesz jej postanowienia.<br /><br />Autorzy aplikacji nie biorą odpowiedzialności za korzystanie z aplikacji Szkolny.eu.]]></string>
     <string name="login_chooser_version_format">Szkolny.eu v%s\n%s</string>
     <string name="menu_agenda_config">Ustawienia terminarza</string>
-    <string name="agenda_config_appearance">Wygląd</string>
+    <string name="config_appearance">Wygląd</string>
     <string name="agenda_config_lesson_changes">Pokazuj zmiany planu lekcji</string>
     <string name="agenda_config_teacher_absence">Pokazuj nieobecności nauczycieli</string>
     <string name="agenda_config_compact_mode">Tryb kompaktowy</string>
@@ -1537,4 +1537,8 @@
     <string name="login_summary_account_parent">(rodzic)</string>
     <string name="grades_subject_unknown">- nieznany przedmiot -</string>
     <string name="grades_subject_unknown_help">{cmd-information-outline} Oceny, których przedmiot nie został podany w dzienniku. Może to być na przykład taki, który nie jest prowadzony w tym roku szkolnym.</string>
+    <string name="menu_timetable_config">Ustawienia planu lekcji</string>
+    <string name="timetable_config_show_events">Pokazuj wydarzenia przy lekcjach</string>
+    <string name="timetable_config_show_attendance">Pokazuj rodzaj obecności na lekcji</string>
+    <string name="timetable_config_trim_hour_range">Nie pokazuj godzin bez lekcji</string>
 </resources>