diff --git a/src/assets/lang/de-CH.yaml b/src/assets/lang/de-CH.yaml
index 2fdbae8..134e30c 100644
--- a/src/assets/lang/de-CH.yaml
+++ b/src/assets/lang/de-CH.yaml
@@ -170,3 +170,30 @@ week: Wuche
 month: Monat
 year: Jahr
 appName: Applikationsname
+calendar:
+  days:
+    - 'Suntig'
+    - 'Mäntig'
+    - 'Zistig'
+    - 'Mittwuch'
+    - 'Donstig'
+    - 'Fritig'
+    - 'Samstig'
+  daysShort: ['So', 'Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa']
+  months:
+    - 'Januar'
+    - 'Februar'
+    - 'März'
+    - 'April'
+    - 'Mai'
+    - 'Juni'
+    - 'Juli'
+    - 'Ougust'
+    - 'Septämber'
+    - 'Oktober'
+    - 'Novämber'
+    - 'Dezämber'
+  monthsShort: ['Jan', 'Feb', 'Mar', 'Apr', 'Mai', 'Jun', 'Jul', 'Aug', 'Sep', 'Okt', 'Nov', 'Dez']
+  firstDayOfWeek: 1
+  format24h: true
+  pluralDay: 'Täg'
diff --git a/src/assets/lang/de-DE.yaml b/src/assets/lang/de-DE.yaml
index 3c61da7..de00805 100644
--- a/src/assets/lang/de-DE.yaml
+++ b/src/assets/lang/de-DE.yaml
@@ -132,20 +132,6 @@ filterByColumn: Spaltenfilter
 filterByColumnValue: Spaltenwerte
 saveAsDefault: Als Standard speichern
 day: Tag
-Monday: Montag
-MondayShort: Mo
-Tuesday: Dienstag
-TuesdayShort: Di
-Wednesday: Mittwoch
-WednesdayShort: Mi
-Thursday: Donnerstag
-ThursdayShort: Do
-Friday: Freitag
-FridayShort: Fr
-Saturday: Samstag
-SaturdayShort: Sa
-Sunday: Sonntag
-SundayShort: So
 currentPassword: Aktuelles Passwort
 addFirstUser: Füge erster Admin Benutzer hinzu
 report: Rapport
@@ -170,3 +156,30 @@ week: Woche
 month: Monat
 year: Jahr
 appName: Applikationsname
+calendar:
+  days:
+    - 'Sonntag'
+    - 'Montag'
+    - 'Dienstag'
+    - 'Mittwoch'
+    - 'Donnerstag'
+    - 'Freitag'
+    - 'Samstag'
+  daysShort: ['So', 'Mo', 'Di', 'Mi', 'Do', 'Fr', 'Sa']
+  months:
+    - 'Januar'
+    - 'Februar'
+    - 'März'
+    - 'April'
+    - 'Mai'
+    - 'Juni'
+    - 'Juli'
+    - 'August'
+    - 'September'
+    - 'Oktober'
+    - 'November'
+    - 'Dezember'
+  monthsShort: ['Jan', 'Feb', 'Mar', 'Apr', 'Mai', 'Jun', 'Jul', 'Aug', 'Sep', 'Okt', 'Nov', 'Dez']
+  firstDayOfWeek: 1
+  format24h: true
+  pluralDay: 'Tage'
diff --git a/src/assets/lang/en-US.yaml b/src/assets/lang/en-US.yaml
index ac875c1..8dc0823 100644
--- a/src/assets/lang/en-US.yaml
+++ b/src/assets/lang/en-US.yaml
@@ -170,3 +170,30 @@ week: Week
 month: Month
 year: Year
 appName: Applicationname
+calendar:
+  days:
+    - 'Sunday'
+    - 'Monday'
+    - 'Tuesday'
+    - 'Wednesday'
+    - 'Thursday'
+    - 'Friday'
+    - 'Saturday'
+  daysShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thur', 'Fri', 'Sat']
+  months:
+    - 'January'
+    - 'February'
+    - 'March'
+    - 'April'
+    - 'May'
+    - 'June'
+    - 'July'
+    - 'August'
+    - 'September'
+    - 'October'
+    - 'November'
+    - 'December'
+  monthsShort: ['Jan', 'Feb', 'Mar', 'Apr', 'Mai', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
+  firstDayOfWeek: 0
+  format24h: false
+  pluralDay: 'Days'
diff --git a/src/assets/lang/es-ES.yaml b/src/assets/lang/es-ES.yaml
index d11e2a7..253014d 100644
--- a/src/assets/lang/es-ES.yaml
+++ b/src/assets/lang/es-ES.yaml
@@ -170,3 +170,30 @@ week: Semana
 month: Mes
 year: Año
 appName: Nombre de la aplicación
+calendar:
+  days:
+    - 'Domingo'
+    - 'Lunes'
+    - 'Martes'
+    - 'Miércoles'
+    - 'Jueves'
+    - 'Viernes'
+    - 'Sábado'
+  daysShort: ['Dom', 'Lun', 'Mar', 'Mié', 'Jue', 'Vie', 'Sáb']
+  months:
+    - 'Enero'
+    - 'Febrero'
+    - 'Marzo'
+    - 'Abril'
+    - 'Mayo'
+    - 'Junio'
+    - 'Julio'
+    - 'Agosto'
+    - 'Septiembre'
+    - 'Octubre'
+    - 'Noviembre'
+    - 'Diciembre'
+  monthsShort: ['Ene', 'Feb', 'Mar', 'Abr', 'May', 'Jun', 'Jul', 'Ago', 'Sep', 'Oct', 'Nov', 'Dic']
+  firstDayOfWeek: 1
+  format24h: true
+  pluralDay: 'dias'
diff --git a/src/components/DateDaySelect.vue b/src/components/DateDaySelect.vue
index 2ba0eb4..aea4553 100644
--- a/src/components/DateDaySelect.vue
+++ b/src/components/DateDaySelect.vue
@@ -31,16 +31,16 @@
       </q-tabs>
     </div>
     <div class="row">
-      <q-date v-model="dateRange" range flat />
+      <q-date :locale="calendarLanguage" v-model="dateRange" range flat />
     </div>
   </div>
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted, watch, type PropType } from 'vue';
+import { ref, onMounted, watch, type PropType, computed } from 'vue';
 import { date } from 'quasar';
 import { i18n } from 'src/boot/lang';
-
+import type { QDateLocale } from 'src/vueLib/models/qDateLocale';
 const props = defineProps({
   title: String,
   height: { type: Number, default: 400 },
@@ -74,6 +74,20 @@ const weekdayOptions = [
   { label: i18n.global.t('SundayShort'), value: 0 },
 ];
 
+const calendarLanguage = computed(() => {
+  // eslint-disable-next-line @typescript-eslint/no-unnecessary-type-assertion
+  const localeData = i18n.global.tm('calendar') as unknown as QDateLocale;
+  return {
+    days: localeData.days,
+    daysShort: localeData.daysShort,
+    months: localeData.months,
+    monthsShort: localeData.monthsShort,
+    firstDayOfWeek: localeData.firstDayOfWeek,
+    format24h: localeData.format24h,
+    pluralDay: localeData.pluralDay,
+  };
+});
+
 const onTabChange = (val: 'today' | 'week' | 'month' | 'year') => {
   if (val) setRange(val);
   // Optional: Reset tab to empty so user can click the same tab again later
diff --git a/src/vueLib/models/qDateLocale.ts b/src/vueLib/models/qDateLocale.ts
new file mode 100644
index 0000000..b62ba96
--- /dev/null
+++ b/src/vueLib/models/qDateLocale.ts
@@ -0,0 +1,9 @@
+export interface QDateLocale {
+  days: string[];
+  daysShort: string[];
+  months: string[];
+  monthsShort: string[];
+  firstDayOfWeek: number;
+  format24h: boolean;
+  pluralDay: string;
+}