diff --git a/assets/helper.js b/assets/helper.js
index 1ed9a029..44692a33 100644
--- a/assets/helper.js
+++ b/assets/helper.js
@@ -5,7 +5,7 @@ export function attributesFromEvents(_events) {
   let attributes = []
   const now = dayjs().unix()
   for (let e of _events) {
-    const key = Math.floor(e.start_datetime/(3600*24)) // dayjs.unix(e.start_datetime).tz().format('YYYYMMDD')
+    const key = dayjs.unix(e.start_datetime).tz().format('MMDD') // Math.floor(e.start_datetime/(3600*24)) // dayjs.unix(e.start_datetime).tz().format('YYYYMMDD')
     const c = (e.end_datetime || e.start_datetime) < now ? 'vc-past' : ''
 
     if (e.multidate) {
diff --git a/components/Calendar.vue b/components/Calendar.vue
index b0af720a..6b15fa4c 100644
--- a/components/Calendar.vue
+++ b/components/Calendar.vue
@@ -9,7 +9,6 @@
     @update:from-page='updatePage'
     :locale='$i18n.locale'
     :attributes='attributes'
-    :timezone='settings.instance_timezone'
     transition='fade'
     aria-label='Calendar'
     is-expanded
diff --git a/plugins/v-calendar.js b/plugins/v-calendar.js
index 0037ea61..06d74ed7 100644
--- a/plugins/v-calendar.js
+++ b/plugins/v-calendar.js
@@ -4,6 +4,6 @@ export default () => {
   Vue.use(VCalendar, {
     componentPrefix: 'vc',
     // why is that ?!
-    firstDayOfWeek: 2
+    // firstDayOfWeek: 2
   })
 }