diff --git a/Bin/calendar-events.py b/Bin/calendar-events.py
new file mode 100755
index 00000000..febfe2ed
--- /dev/null
+++ b/Bin/calendar-events.py
@@ -0,0 +1,135 @@
+#!/usr/bin/env python3
+import gi
+
+gi.require_version('EDataServer', '1.2')
+gi.require_version('ECal', '2.0')
+import json
+import sys
+import time
+from datetime import datetime, timezone
+
+from gi.repository import ECal, EDataServer
+
+start_time = int(sys.argv[1])
+end_time = int(sys.argv[2])
+
+print(f"Starting with time range: {start_time} to {end_time}", file=sys.stderr)
+
+all_events = []
+
+def safe_get_time(ical_time):
+    """Safely get time from ICalTime object"""
+    if not ical_time:
+        return None
+
+    try:
+        year = ical_time.get_year()
+        month = ical_time.get_month()
+        day = ical_time.get_day()
+
+        if year < 1970 or year > 2100 or month < 1 or month > 12 or day < 1 or day > 31:
+            return None
+
+        if ical_time.is_date():
+            local_struct = time.struct_time((year, month, day, 0, 0, 0, 0, 0, -1))
+            return int(time.mktime(local_struct))
+
+        hour = ical_time.get_hour()
+        minute = ical_time.get_minute()
+        second = ical_time.get_second()
+
+        dt = datetime(year, month, day, hour, minute, second, tzinfo=timezone.utc)
+        return int(dt.timestamp())
+    except Exception:
+        return None
+
+print("Getting registry...", file=sys.stderr)
+registry = EDataServer.SourceRegistry.new_sync(None)
+print("Registry obtained", file=sys.stderr)
+
+sources = registry.list_sources(EDataServer.SOURCE_EXTENSION_CALENDAR)
+print(f"Found {len(sources)} calendar sources", file=sys.stderr)
+
+for source in sources:
+    if not source.get_enabled():
+        print(f"Skipping disabled calendar: {source.get_display_name()}", file=sys.stderr)
+        continue
+
+    calendar_name = source.get_display_name()
+    print(f"\nProcessing calendar: {calendar_name}", file=sys.stderr)
+
+    try:
+        print(f"  Connecting to {calendar_name}...", file=sys.stderr)
+        client = ECal.Client.connect_sync(
+            source,
+            ECal.ClientSourceType.EVENTS,
+            30,
+            None
+        )
+        print(f"  Connected to {calendar_name}", file=sys.stderr)
+
+        start_dt = datetime.fromtimestamp(start_time, tz=timezone.utc)
+        end_dt = datetime.fromtimestamp(end_time, tz=timezone.utc)
+
+        start_str = start_dt.strftime("%Y%m%dT%H%M%SZ")
+        end_str = end_dt.strftime("%Y%m%dT%H%M%SZ")
+
+        query = f'(occur-in-time-range? (make-time "{start_str}") (make-time "{end_str}"))'
+        print(f"  Query: {query}", file=sys.stderr)
+
+        print(f"  Getting object list for {calendar_name}...", file=sys.stderr)
+        success, ical_objects = client.get_object_list_sync(query, None)
+        print(f"  Got object list for {calendar_name}: success={success}, count={len(ical_objects) if ical_objects else 0}", file=sys.stderr)
+
+        if not success or not ical_objects:
+            print(f"  No events found in {calendar_name}", file=sys.stderr)
+            continue
+
+        print(f"  Processing {len(ical_objects)} events from {calendar_name}...", file=sys.stderr)
+        for idx, ical_obj in enumerate(ical_objects):
+            try:
+                if hasattr(ical_obj, 'get_summary'):
+                    comp = ical_obj
+                else:
+                    comp = ECal.Component.new_from_string(ical_obj)
+
+                if not comp:
+                    continue
+
+                summary = comp.get_summary() or "(No title)"
+
+                start_timestamp = safe_get_time(comp.get_dtstart())
+                if start_timestamp is None:
+                    continue
+
+                end_timestamp = safe_get_time(comp.get_dtend())
+                if end_timestamp is None or end_timestamp == start_timestamp:
+                    end_timestamp = start_timestamp + 3600
+
+                location = comp.get_location() or ""
+                description = comp.get_description() or ""
+
+                all_events.append({
+                    'summary': summary,
+                    'start': start_timestamp,
+                    'end': end_timestamp,
+                    'location': location,
+                    'description': description,
+                    'calendar': calendar_name
+                })
+
+                if (idx + 1) % 10 == 0:
+                    print(f"  Processed {idx + 1} events from {calendar_name}...", file=sys.stderr)
+            except Exception as e:
+                print(f"  Error processing event {idx} in {calendar_name}: {e}", file=sys.stderr)
+                continue
+
+        print(f"  Finished processing {calendar_name}, found {len([e for e in all_events if e['calendar'] == calendar_name])} events", file=sys.stderr)
+
+    except Exception as e:
+        print(f"  Error for {calendar_name}: {e}", file=sys.stderr)
+
+print(f"\nSorting {len(all_events)} total events...", file=sys.stderr)
+all_events.sort(key=lambda x: x['start'])
+print("Done! Outputting JSON...", file=sys.stderr)
+print(json.dumps(all_events))
diff --git a/Bin/check-calendar.py b/Bin/check-calendar.py
new file mode 100755
index 00000000..463d2e40
--- /dev/null
+++ b/Bin/check-calendar.py
@@ -0,0 +1,11 @@
+#!/usr/bin/env python3
+import gi
+
+gi.require_version('EDataServer', '1.2')
+gi.require_version('ECal', '2.0')
+
+try:
+    from gi.repository import ECal, EDataServer
+    print("available")
+except ImportError as e:
+    print(f"unavailable: {e}")
diff --git a/Bin/list-calendars.py b/Bin/list-calendars.py
new file mode 100755
index 00000000..12c67bd1
--- /dev/null
+++ b/Bin/list-calendars.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+import gi
+
+gi.require_version('EDataServer', '1.2')
+import json
+
+from gi.repository import EDataServer
+
+registry = EDataServer.SourceRegistry.new_sync(None)
+sources = registry.list_sources(EDataServer.SOURCE_EXTENSION_CALENDAR)
+
+calendars = []
+for source in sources:
+    if source.get_enabled():
+        calendars.append({
+            'uid': source.get_uid(),
+            'name': source.get_display_name(),
+            'enabled': True
+        })
+
+print(json.dumps(calendars))
diff --git a/Modules/Bar/Calendar/CalendarPanel.qml b/Modules/Bar/Calendar/CalendarPanel.qml
index b882324d..42ced01a 100644
--- a/Modules/Bar/Calendar/CalendarPanel.qml
+++ b/Modules/Bar/Calendar/CalendarPanel.qml
@@ -10,6 +10,7 @@ import qs.Widgets
 NPanel {
   id: root
 
+  property ShellScreen screen
   readonly property var now: Time.date
 
   preferredWidth: (Settings.data.location.showWeekNumberInCalendar ? 400 : 380) * Style.uiScaleRatio
@@ -347,6 +348,14 @@ NPanel {
           grid.year = newDate.getFullYear()
           grid.month = newDate.getMonth()
           content.isCurrentMonth = content.checkIsCurrentMonth()
+          const now = new Date()
+          const monthStart = new Date(grid.year, grid.month, 1)
+          const monthEnd = new Date(grid.year, grid.month + 1, 0)
+
+          const daysBehind = Math.max(0, Math.ceil((now - monthStart) / (24 * 60 * 60 * 1000)))
+          const daysAhead = Math.max(0, Math.ceil((monthEnd - now) / (24 * 60 * 60 * 1000)))
+
+          CalendarService.loadEvents(daysAhead + 30, daysBehind + 30)
         }
       }
       NIconButton {
@@ -355,6 +364,7 @@ NPanel {
           grid.month = Time.date.getMonth()
           grid.year = Time.date.getFullYear()
           content.isCurrentMonth = true
+          CalendarService.loadEvents()
         }
       }
       NIconButton {
@@ -364,6 +374,14 @@ NPanel {
           grid.year = newDate.getFullYear()
           grid.month = newDate.getMonth()
           content.isCurrentMonth = content.checkIsCurrentMonth()
+          const now = new Date()
+          const monthStart = new Date(grid.year, grid.month, 1)
+          const monthEnd = new Date(grid.year, grid.month + 1, 0)
+
+          const daysBehind = Math.max(0, Math.ceil((now - monthStart) / (24 * 60 * 60 * 1000)))
+          const daysAhead = Math.max(0, Math.ceil((monthEnd - now) / (24 * 60 * 60 * 1000)))
+
+          CalendarService.loadEvents(daysAhead + 30, daysBehind + 30)
         }
       }
     }
@@ -405,6 +423,71 @@ NPanel {
       Layout.fillWidth: true
       Layout.fillHeight: true
       spacing: 0
+
+      // Helper function to check if a date has events
+      function hasEventsOnDate(year, month, day) {
+        if (!CalendarService.available || CalendarService.events.length === 0)
+          return false
+
+        const targetDate = new Date(year, month, day)
+        const targetStart = new Date(targetDate.getFullYear(), targetDate.getMonth(), targetDate.getDate()).getTime() / 1000
+        const targetEnd = targetStart + 86400 // +24 hours
+
+        return CalendarService.events.some(event => {
+                                             // Check if event starts or overlaps with this day
+                                             return (event.start >= targetStart && event.start < targetEnd) || (event.end > targetStart && event.end <= targetEnd) || (event.start < targetStart && event.end > targetEnd)
+                                           })
+      }
+
+      // Helper function to get events for a specific date
+      function getEventsForDate(year, month, day) {
+        if (!CalendarService.available || CalendarService.events.length === 0)
+          return []
+
+        const targetDate = new Date(year, month, day)
+        const targetStart = Math.floor(new Date(targetDate.getFullYear(), targetDate.getMonth(), targetDate.getDate()).getTime() / 1000)
+        const targetEnd = targetStart + 86400 // +24 hours
+
+        return CalendarService.events.filter(event => {
+                                               return (event.start >= targetStart && event.start < targetEnd) || (event.end > targetStart && event.end <= targetEnd) || (event.start < targetStart && event.end > targetEnd)
+                                             })
+      }
+
+      // Helper function to check if an event is all-day
+      function isAllDayEvent(event) {
+        const duration = event.end - event.start
+        const startDate = new Date(event.start * 1000)
+        const isAtMidnight = startDate.getHours() === 0 && startDate.getMinutes() === 0
+        return duration === 86400 && isAtMidnight
+      }
+
+      // Helper function to check if an event is multi-day
+      function isMultiDayEvent(event) {
+        if (isAllDayEvent(event)) {
+          return false
+        }
+
+        const startDate = new Date(event.start * 1000)
+        const endDate = new Date(event.end * 1000)
+
+        const startDateOnly = new Date(startDate.getFullYear(), startDate.getMonth(), startDate.getDate())
+        const endDateOnly = new Date(endDate.getFullYear(), endDate.getMonth(), endDate.getDate())
+
+        return startDateOnly.getTime() !== endDateOnly.getTime()
+      }
+
+      // Helper function to get color for a specific event
+      function getEventColor(event, isToday) {
+        if (isMultiDayEvent(event)) {
+          return isToday ? Color.mOnSecondary : Color.mTertiary
+        } else if (isAllDayEvent(event)) {
+          return isToday ? Color.mOnSecondary : Color.mSecondary
+        } else {
+          return isToday ? Color.mOnSecondary : Color.mPrimary
+        }
+      }
+
+      // Column of week numbers
       ColumnLayout {
         visible: Settings.data.location.showWeekNumberInCalendar
         Layout.preferredWidth: visible ? Style.baseWidgetSize * 0.7 : 0
@@ -475,6 +558,55 @@ NPanel {
               pointSize: Style.fontSizeM
               font.weight: model.today ? Style.fontWeightBold : Style.fontWeightMedium
             }
+
+            // Event indicator dots
+            Row {
+              visible: parent.parent.parent.parent.parent.hasEventsOnDate(model.year, model.month, model.day)
+              spacing: 2 * scaling
+              anchors.horizontalCenter: parent.horizontalCenter
+              anchors.bottom: parent.bottom
+              anchors.bottomMargin: Style.marginXS * scaling
+
+              readonly property int currentYear: model.year
+              readonly property int currentMonth: model.month
+              readonly property int currentDay: model.day
+              readonly property bool isToday: model.today
+
+              Repeater {
+                model: parent.parent.parent.parent.parent.parent.getEventsForDate(parent.currentYear, parent.currentMonth, parent.currentDay)
+
+                Rectangle {
+                  width: 4 * scaling
+                  height: 4 * scaling
+                  radius: 2 * scaling
+                  color: parent.parent.parent.parent.parent.parent.getEventColor(modelData, model.today)
+                }
+              }
+            }
+
+            MouseArea {
+              anchors.fill: parent
+              hoverEnabled: true
+
+              onEntered: {
+                const events = parent.parent.parent.parent.parent.getEventsForDate(model.year, model.month, model.day)
+                if (events.length > 0) {
+                  const summaries = events.map(e => e.summary).join('\n')
+                  TooltipService.show(Screen, parent, summaries)
+                  TooltipService.updateText(summaries)
+                }
+              }
+
+              onClicked: {
+                const dateWithSlashes = `${model.month.toString().padStart(2, '0')}/${model.day.toString().padStart(2, '0')}/${model.year.toString().substring(2)}`
+                Quickshell.execDetached(["gnome-calendar", "--date", dateWithSlashes])
+              }
+
+              onExited: {
+                TooltipService.hide()
+              }
+            }
+
             Behavior on color {
               ColorAnimation {
                 duration: Style.animationFast
diff --git a/Services/CalendarService.qml b/Services/CalendarService.qml
new file mode 100644
index 00000000..c7498ed0
--- /dev/null
+++ b/Services/CalendarService.qml
@@ -0,0 +1,250 @@
+pragma Singleton
+
+import QtQuick
+import Quickshell
+import Quickshell.Io
+import qs.Commons
+
+Singleton {
+  id: root
+
+  // Core state
+  property var events: ([])
+  property bool loading: false
+  property bool available: false
+  property string lastError: ""
+  property var calendars: ([])
+
+  // Persistent cache
+  property string cacheFile: Settings.cacheDir + "calendar.json"
+
+  // Python scripts
+  readonly property string checkCalendarAvailableScript: Quickshell.shellDir + '/Bin/check-calendar.py'
+  readonly property string listCalendarsScript: Quickshell.shellDir + '/Bin/list-calendars.py'
+  readonly property string calendarEventsScript: Quickshell.shellDir + '/Bin/calendar-events.py'
+
+  // Cache file handling
+  FileView {
+    id: cacheFileView
+    path: root.cacheFile
+    printErrors: false
+
+    JsonAdapter {
+      id: cacheAdapter
+      property var cachedEvents: ([])
+      property var cachedCalendars: ([])
+      property string lastUpdate: ""
+    }
+
+    onLoadFailed: {
+      cacheAdapter.cachedEvents = ([])
+      cacheAdapter.cachedCalendars = ([])
+      cacheAdapter.lastUpdate = ""
+    }
+
+    onLoaded: {
+      loadFromCache()
+    }
+  }
+
+  Component.onCompleted: {
+    Logger.log("Calendar", "Service initialized")
+    loadFromCache()
+    checkAvailability()
+  }
+
+  // Save cache with debounce
+  Timer {
+    id: saveDebounce
+    interval: 1000
+    onTriggered: cacheFileView.writeAdapter()
+  }
+
+  function saveCache() {
+    saveDebounce.restart()
+  }
+
+  // Load events and calendars from cache
+  function loadFromCache() {
+    if (cacheAdapter.cachedEvents && cacheAdapter.cachedEvents.length > 0) {
+      root.events = cacheAdapter.cachedEvents
+      Logger.log("Calendar", `Loaded ${cacheAdapter.cachedEvents.length} cached event(s)`)
+    }
+
+    if (cacheAdapter.cachedCalendars && cacheAdapter.cachedCalendars.length > 0) {
+      root.calendars = cacheAdapter.cachedCalendars
+      Logger.log("Calendar", `Loaded ${cacheAdapter.cachedCalendars.length} cached calendar(s)`)
+    }
+
+    if (cacheAdapter.lastUpdate) {
+      Logger.log("Calendar", `Cache last updated: ${cacheAdapter.lastUpdate}`)
+    }
+  }
+
+  // Auto-refresh timer (every 5 minutes)
+  Timer {
+    id: refreshTimer
+    interval: 300000
+    running: true
+    repeat: true
+    onTriggered: loadEvents()
+  }
+
+  // Core functions
+  function checkAvailability() {
+    availabilityCheckProcess.running = true
+  }
+
+  function loadCalendars() {
+    listCalendarsProcess.running = true
+  }
+
+  function loadEvents(daysAhead = 31, daysBehind = 14) {
+    if (loading)
+      return
+
+    loading = true
+    lastError = ""
+
+    const now = new Date()
+    const startDate = new Date(now.getTime() - (daysBehind * 24 * 60 * 60 * 1000))
+    const endDate = new Date(now.getTime() + (daysAhead * 24 * 60 * 60 * 1000))
+
+    loadEventsProcess.startTime = Math.floor(startDate.getTime() / 1000)
+    loadEventsProcess.endTime = Math.floor(endDate.getTime() / 1000)
+    loadEventsProcess.running = true
+
+    Logger.log("Calendar", `Loading events (${daysBehind} days behind, ${daysAhead} days ahead): ${startDate.toLocaleDateString()} to ${endDate.toLocaleDateString()}`)
+  }
+
+  // Helper to format date/time
+  function formatDateTime(timestamp) {
+    const date = new Date(timestamp * 1000)
+    return Qt.formatDateTime(date, "yyyy-MM-dd hh:mm")
+  }
+
+  // Process to check for evolution-data-server libraries
+  Process {
+    id: availabilityCheckProcess
+    running: false
+    command: ["sh", "-c", "command -v python3 >/dev/null 2>&1 && python3 " + root.checkCalendarAvailableScript + " || echo 'unavailable: python3 not installed'"]
+
+    stdout: StdioCollector {
+      onStreamFinished: {
+        const result = text.trim()
+        root.available = result === "available"
+
+        if (root.available) {
+          Logger.log("Calendar", "EDS libraries available")
+          loadCalendars()
+        } else {
+          Logger.warn("Calendar", "EDS libraries not available: " + result)
+          root.lastError = "Evolution Data Server libraries not installed"
+        }
+      }
+    }
+
+    stderr: StdioCollector {
+      onStreamFinished: {
+        if (text.trim()) {
+          Logger.warn("Calendar", "Availability check error: " + text)
+          root.available = false
+          root.lastError = "Failed to check library availability"
+        }
+      }
+    }
+  }
+
+  // Process to list available calendars
+  Process {
+    id: listCalendarsProcess
+    running: false
+    command: ["python3", root.listCalendarsScript]
+
+    stdout: StdioCollector {
+      onStreamFinished: {
+        try {
+          const result = JSON.parse(text.trim())
+          root.calendars = result
+          cacheAdapter.cachedCalendars = result
+          saveCache()
+
+          Logger.log("Calendar", `Found ${result.length} calendar(s)`)
+
+          // Auto-load events after discovering calendars
+          // Only load if we have calendars and no cached events
+          if (result.length > 0 && root.events.length === 0) {
+            loadEvents()
+          } else if (result.length > 0) {
+            // If we already have cached events, load in background
+            loadEvents()
+          }
+        } catch (e) {
+          Logger.warn("Calendar", "Failed to parse calendars: " + e)
+          root.lastError = "Failed to parse calendar list"
+        }
+      }
+    }
+
+    stderr: StdioCollector {
+      onStreamFinished: {
+        if (text.trim()) {
+          Logger.warn("Calendar", "List calendars error: " + text)
+          root.lastError = text.trim()
+        }
+      }
+    }
+  }
+
+  // Process to load events
+  Process {
+    id: loadEventsProcess
+    running: false
+    property int startTime: 0
+    property int endTime: 0
+
+    command: ["python3", root.calendarEventsScript, startTime.toString(), endTime.toString()]
+
+    stdout: StdioCollector {
+      onStreamFinished: {
+        root.loading = false
+
+        try {
+          const result = JSON.parse(text.trim())
+          root.events = result
+          cacheAdapter.cachedEvents = result
+          cacheAdapter.lastUpdate = new Date().toISOString()
+          saveCache()
+
+          Logger.log("Calendar", `Loaded ${result.length} event(s)`)
+        } catch (e) {
+          Logger.warn("Calendar", "Failed to parse events: " + e)
+          root.lastError = "Failed to parse events"
+
+          // Fall back to cached events if available
+          if (cacheAdapter.cachedEvents.length > 0) {
+            root.events = cacheAdapter.cachedEvents
+            Logger.log("Calendar", "Using cached events")
+          }
+        }
+      }
+    }
+
+    stderr: StdioCollector {
+      onStreamFinished: {
+        root.loading = false
+
+        if (text.trim()) {
+          Logger.warn("Calendar", "Load events error: " + text)
+          root.lastError = text.trim()
+
+          // Fall back to cached events if available
+          if (cacheAdapter.cachedEvents.length > 0) {
+            root.events = cacheAdapter.cachedEvents
+            Logger.log("Calendar", "Using cached events due to error")
+          }
+        }
+      }
+    }
+  }
+}