diff --git a/components/Calendar.vue b/components/Calendar.vue
index 8426f0c0..899fd16b 100644
--- a/components/Calendar.vue
+++ b/components/Calendar.vue
@@ -9,6 +9,7 @@
       @update:from-page='updatePage'
       :locale='$i18n.locale'
       :attributes='attributes'
+      :timezone='settings.instance_timezone'
       transition='fade'
       aria-label='Calendar'
       is-expanded
@@ -26,8 +27,8 @@ export default {
     events: { type: Array, default: () => [] }
   },
   data () {
-    const month = dayjs().month() + 1
-    const year = dayjs().year()
+    const month = dayjs.tz().month() + 1
+    const year = dayjs.tz().year()
     return {
       selectedDate: null,
       page: { month, year }
@@ -42,9 +43,7 @@ export default {
   methods: {
     ...mapActions(['updateEvents', 'showPastEvents']),
     updatePage (page) {
-      return new Promise((resolve, reject) => {
         this.$emit('monthchange', page)
-      })
     },
     click (day) {
       this.$emit('dayclick', day)
diff --git a/pages/add/DateInput.vue b/pages/add/DateInput.vue
index b6d605ef..0cc27494 100644
--- a/pages/add/DateInput.vue
+++ b/pages/add/DateInput.vue
@@ -78,8 +78,7 @@ export default {
     todayEvents () {
       const start = dayjs(this.value.from).startOf('day').unix()
       const end = dayjs(this.value.from).endOf('day').unix()
-      const events = this.events.filter(e => e.start_datetime >= start && e.start_datetime <= end)
-      return events
+      return this.events.filter(e => e.start_datetime >= start && e.start_datetime <= end)
     },
     attributes () {
       return attributesFromEvents(this.events, this.tags)
@@ -92,10 +91,10 @@ export default {
     },
 
     fromHour () {
-      return this.value.from && this.value.fromHour ? dayjs(this.value.from).format('HH:mm') : null
+      return this.value.from && this.value.fromHour ? dayjs.tz(this.value.from).format('HH:mm') : null
     },
     dueHour () {
-      return this.value.due && this.value.dueHour ? dayjs(this.value.due).format('HH:mm') : null
+      return this.value.due && this.value.dueHour ? dayjs.tz(this.value.due).format('HH:mm') : null
     },
     hourList () {
       const hourList = []
@@ -196,7 +195,7 @@ export default {
       } else if (what === 'fromHour') {
         if (value) {
           const [hour, minute] = value.split(':')
-          const from = dayjs(this.value.from).hour(hour).minute(minute).second(0)
+          const from = dayjs.tz(this.value.from).hour(hour).minute(minute).second(0)
           this.$emit('input', { ...this.value, from, fromHour: true })
         } else {
           this.$emit('input', { ...this.value, fromHour: false })
@@ -204,7 +203,7 @@ export default {
       } else if (what === 'dueHour') {
         if (value) {
           const [hour, minute] = value.split(':')
-          const fromHour = dayjs(this.value.from).hour()
+          const fromHour = dayjs.tz(this.value.from).hour()
 
           // add a day
           let due = dayjs(this.value.from)
@@ -226,20 +225,20 @@ export default {
           let from = value.start
           let due = value.end
           if (this.value.fromHour) {
-            from = dayjs(value.start).hour(dayjs(this.value.from).hour())
+            from = dayjs.tz(value.start).hour(dayjs.tz(this.value.from).hour())
           }
           if (this.value.dueHour) {
-            due = dayjs(value.end).hour(dayjs(this.value.due).hour())
+            due = dayjs.tz(value.end).hour(dayjs.tz(this.value.due).hour())
           }
           this.$emit('input', { ...this.value, from, due })
         } else {
           let from = value
           let due = this.value.due
           if (this.value.fromHour) {
-            from = dayjs(value).hour(dayjs(this.value.from).hour())
+            from = dayjs.tz(value).hour(dayjs.tz(this.value.from).hour())
           }
           if (this.value.dueHour && this.value.due) {
-            due = dayjs(value).hour(dayjs(this.value.due).hour())
+            due = dayjs.tz(value).hour(dayjs.tz(this.value.due).hour())
           }
           this.$emit('input', { ...this.value, from, due })
         }
diff --git a/pages/add/_edit.vue b/pages/add/_edit.vue
index d2563df6..81a7bc65 100644
--- a/pages/add/_edit.vue
+++ b/pages/add/_edit.vue
@@ -84,7 +84,7 @@ export default {
   validate ({ store }) {
     return (store.state.auth.loggedIn || store.state.settings.allow_anon_event)
   },
-  async asyncData ({ params, $axios, error, store }) {
+  async asyncData ({ params, $axios, error }) {
     if (params.edit) {
       const data = { event: { place: {}, media: [] } }
       data.id = params.edit
@@ -101,8 +101,8 @@ export default {
       data.event.place.address = event.place.address || ''
       data.date = {
         recurrent: event.recurrent,
-        from: new Date(dayjs.unix(event.start_datetime)),
-        due: new Date(dayjs.unix(event.end_datetime)),
+        from: dayjs.unix(event.start_datetime).toDate(),
+        due: dayjs.unix(event.end_datetime).toDate(),
         multidate: event.multidate,
         fromHour: true,
         dueHour: true
@@ -118,8 +118,8 @@ export default {
     return {}
   },
   data () {
-    const month = dayjs().month() + 1
-    const year = dayjs().year()
+    const month = dayjs.tz().month() + 1
+    const year = dayjs.tz().year()
     return {
       mdiFileImport, mdiFormatTitle, mdiTagMultiple, mdiCloseCircle,
       valid: false,
diff --git a/pages/index.vue b/pages/index.vue
index 94225393..aaeb53d1 100644
--- a/pages/index.vue
+++ b/pages/index.vue
@@ -1,26 +1,25 @@
 <template lang="pug">
-  v-container#home(fluid)
+v-container#home(fluid)
 
-    //- Announcements
-    #announcements.mx-1.mt-1(v-if='announcements.length')
-      Announcement(v-for='announcement in announcements' :key='`a_${announcement.id}`' :announcement='announcement')
+  //- Announcements
+  #announcements.mx-1.mt-1(v-if='announcements.length')
+    Announcement(v-for='announcement in announcements' :key='`a_${announcement.id}`' :announcement='announcement')
 
-    //- Calendar and search bar
-    v-row.pt-0.pt-sm-2.pl-0.pl-sm-2
-      #calh.col-xl-5.col-lg-5.col-md-7.col-sm-12.col-xs-12.pa-4.pa-sm-3
-        //- this is needed as v-calendar does not support SSR
-        //- https://github.com/nathanreyes/v-calendar/issues/336
-        client-only(placeholder='Calendar unavailable without js')
-          Calendar(@dayclick='dayChange' @monthchange='monthChange' :events='filteredEvents')
+  //- Calendar and search bar
+  v-row.pt-0.pt-sm-2.pl-0.pl-sm-2
+    #calh.col-xl-5.col-lg-5.col-md-7.col-sm-12.col-xs-12.pa-4.pa-sm-3
+      //- this is needed as v-calendar does not support SSR
+      //- https://github.com/nathanreyes/v-calendar/issues/336
+      client-only(placeholder='Calendar unavailable without js')
+        Calendar(@dayclick='dayChange' @monthchange='monthChange' :events='filteredEvents')
 
-      .col.pt-0.pt-md-2
-        Search(:filters='filters' @update='updateFilters')
-        v-chip(v-if='selectedDay' close :close-icon='mdiCloseCircle' @click:close='dayChange()') {{selectedDay}}
-
-    //- Events
-    #events.mb-2.mt-1.pl-1.pl-sm-2
-      Event(:event='event' @destroy='destroy' v-for='(event, idx) in visibleEvents' :lazy='idx>2' :key='event.id' @tagclick='tagClick' @placeclick='placeClick')
+    .col.pt-0.pt-md-2
+      Search(:filters='filters' @update='updateFilters')
+      v-chip(v-if='selectedDay' close :close-icon='mdiCloseCircle' @click:close='dayChange()') {{selectedDay}}
 
+  //- Events
+  #events.mb-2.mt-1.pl-1.pl-sm-2
+    Event(:event='event' @destroy='destroy' v-for='(event, idx) in visibleEvents' :lazy='idx>2' :key='event.id' @tagclick='tagClick' @placeclick='placeClick')
 </template>
 
 <script>
@@ -37,7 +36,7 @@ export default {
   name: 'Index',
   components: { Event, Search, Announcement, Calendar },
   middleware: 'setup',
-  async asyncData ({ params, $api, store }) {
+  async asyncData ({ $api }) {
     const events = await $api.getEvents({
       start: dayjs().startOf('month').unix(),
       end: null,
@@ -45,13 +44,13 @@ export default {
     })
     return { events }
   },
-  data ({ $store }) {
+  data () {
     return {
       mdiCloseCircle,
       first: true,
       isCurrentMonth: true,
       now: dayjs().unix(),
-      date: dayjs().format('YYYY-MM-DD'),
+      date: dayjs.tz().format('YYYY-MM-DD'),
       events: [],
       start: dayjs().startOf('month').unix(),
       end: null,
@@ -113,10 +112,8 @@ export default {
     }
   },
   methods: {
-    // onIntersect (isIntersecting, eventId) {
-    // this.intersecting[eventId] = isIntersecting
-    // },
     ...mapActions(['setFilters']),
+
     destroy (id) {
       this.events = this.events.filter(e => e.id !== id)
     },
@@ -158,16 +155,15 @@ export default {
       this.selectedDay = null
 
       // check if current month is selected
-      if (month - 1 === dayjs().month() && year === dayjs().year()) {
+      if (month - 1 === dayjs.tz().month() && year === dayjs.tz().year()) {
         this.isCurrentMonth = true
         this.start = dayjs().startOf('month').unix()
-        this.date = dayjs().format('YYYY-MM-DD')
+        this.date = dayjs.tz().format('YYYY-MM-DD')
       } else {
         this.isCurrentMonth = false
         this.date = ''
         this.start = dayjs().year(year).month(month - 1).startOf('month').unix() // .startOf('week').unix()
       }
-      // TODO: check if calendar view is double
       this.end = dayjs().year(year).month(month).endOf('month').unix() // .endOf('week').unix()
       this.updateEvents()
     },
@@ -175,7 +171,7 @@ export default {
       this.setFilters(filters)
     },
     dayChange (day) {
-      this.selectedDay = day ? dayjs(day).format('YYYY-MM-DD') : null
+      this.selectedDay = day ? dayjs.tz(day).format('YYYY-MM-DD') : null
     }
   }
 }
diff --git a/plugins/filters.js b/plugins/filters.js
index 8147ac9d..4a94eb5b 100644
--- a/plugins/filters.js
+++ b/plugins/filters.js
@@ -7,12 +7,15 @@ import localizedFormat from 'dayjs/plugin/localizedFormat'
 
 
 import 'dayjs/locale/it'
+import 'dayjs/locale/en'
 import 'dayjs/locale/es'
 import 'dayjs/locale/ca'
 import 'dayjs/locale/pl'
 import 'dayjs/locale/eu'
 import 'dayjs/locale/nb'
 import 'dayjs/locale/fr'
+import 'dayjs/locale/de'
+import 'dayjs/locale/gl'
 
 dayjs.extend(relativeTime)
 dayjs.extend(utc)
@@ -23,25 +26,27 @@ export default ({ app, store }) => {
   // set timezone to instance_timezone!!
   // to show local time relative to event's place
   // not where in the world I'm looking at the page from
-  dayjs.tz.setDefault(store.state.settings.instance_timezone)
-  dayjs.locale(store.state.locale)
+  const instance_timezone = store.state.settings.instance_timezone
+  const locale = store.state.locale
+  dayjs.tz.setDefault(instance_timezone)
+  dayjs.locale(locale)
 
   // replace links with anchors
   // TODO: remove fb tracking id?
   Vue.filter('linkify', value => value.replace(/(https?:\/\/([^\s]+))/g, '<a href="$1">$2</a>'))
   Vue.filter('url2host', url => url.match(/^https?:\/\/(.[^/:]+)/i)[1])
-  Vue.filter('datetime', value => dayjs(value).locale(store.state.locale).format('ddd, D MMMM HH:mm'))
-  Vue.filter('dateFormat', (value, format) => dayjs(value).format(format))
-  Vue.filter('unixFormat', (timestamp, format) => dayjs.unix(timestamp).format(format))
+  Vue.filter('datetime', value => dayjs.tz(value).locale(locale).format('ddd, D MMMM HH:mm'))
+  Vue.filter('dateFormat', (value, format) => dayjs.tz(value).format(format))
+  Vue.filter('unixFormat', (timestamp, format) => dayjs.unix(timestamp).tz(instance_timezone).format(format))
 
   // shown in mobile homepage
-  Vue.filter('day', value => dayjs.unix(value).locale(store.state.locale).format('dddd, D MMM'))
-  Vue.filter('mediaURL', (event, type) => {
+  Vue.filter('day', value => dayjs.unix(value).tz(instance_timezone).locale(store.state.locale).format('dddd, D MMM'))
+  Vue.filter('mediaURL', (event, type, format = '.jpg') => {
     if (event.media && event.media.length) {
       if (type === 'alt') {
         return event.media[0].name
       } else {
-        return store.state.settings.baseurl + '/media/' + (type === 'thumb' ? 'thumb/' : '') + event.media[0].url
+        return store.state.settings.baseurl + '/media/' + (type === 'thumb' ? 'thumb/' : '') + event.media[0].url.replace(/.jpg$/, format)
       }
     } else if (type !== 'alt') {
       return store.state.settings.baseurl + '/media/' + (type === 'thumb' ? 'thumb/' : '') + 'logo.svg'
@@ -49,16 +54,16 @@ export default ({ app, store }) => {
     return ''
   })
 
-  Vue.filter('from', timestamp => dayjs.unix(timestamp).fromNow())
+  Vue.filter('from', timestamp => dayjs.unix(timestamp).tz(instance_timezone).fromNow())
 
   Vue.filter('recurrentDetail', event => {
     const parent = event.parent
     const { frequency, type } = parent.recurrent
     let recurrent
     if (frequency === '1w' || frequency === '2w') {
-      recurrent = app.i18n.t(`event.recurrent_${frequency}_days`, { days: dayjs.unix(parent.start_datetime).format('dddd') })
+      recurrent = app.i18n.t(`event.recurrent_${frequency}_days`, { days: dayjs.unix(parent.start_datetime).tz(instance_timezone).format('dddd') })
     } else if (frequency === '1m' || frequency === '2m') {
-      const d = type === 'ordinal' ? dayjs.unix(parent.start_datetime).date() : dayjs.unix(parent.start_datetime).format('dddd')
+      const d = type === 'ordinal' ? dayjs.unix(parent.start_datetime).date() : dayjs.unix(parent.start_datetime).tz(instance_timezone).format('dddd')
       if (type === 'ordinal') {
         recurrent = app.i18n.t(`event.recurrent_${frequency}_days`, { days: d })
       } else {
@@ -70,8 +75,8 @@ export default ({ app, store }) => {
   })
 
   Vue.filter('when', (event) => {
-    const start = dayjs.unix(event.start_datetime)
-    const end = dayjs.unix(event.end_datetime)
+    const start = dayjs.unix(event.start_datetime).tz(instance_timezone)
+    const end = dayjs.unix(event.end_datetime).tz(instance_timezone)
 
     // const normal = `${start.format('dddd, D MMMM (HH:mm-')}${end.format('HH:mm) ')}`
     // // recurrent event
diff --git a/server/api/models/event.js b/server/api/models/event.js
index c3150e86..3adbe2bc 100644
--- a/server/api/models/event.js
+++ b/server/api/models/event.js
@@ -1,5 +1,4 @@
 const config = require('../../config')
-const moment = require('dayjs')
 const { htmlToText } = require('html-to-text')
 
 const { Model, DataTypes } = require('sequelize')
@@ -14,9 +13,12 @@ const Place = require('./place')
 const User = require('./user')
 const Tag = require('./tag')
 
-const utc = require('dayjs/plugin/utc')
 const dayjs = require('dayjs')
+const timezone = require('dayjs/plugin/timezone')
+const utc = require('dayjs/plugin/utc')
+
 dayjs.extend(utc)
+dayjs.extend(timezone)
 
 class Event extends Model {}
 
@@ -76,7 +78,7 @@ Event.prototype.toAP = function (username, locale, to = []) {
   const plainDescription = htmlToText(this.description && this.description.replace('\n', '').slice(0, 1000))
   const content = `
     📍 ${this.place && this.place.name}
-    📅 ${moment.unix(this.start_datetime).locale(locale).format('dddd, D MMMM (HH:mm)')}
+    📅 ${dayjs.unix(this.start_datetime).tz().locale(locale).format('dddd, D MMMM (HH:mm)')}
 
     ${plainDescription}
   `
@@ -99,8 +101,8 @@ Event.prototype.toAP = function (username, locale, to = []) {
     name: this.title,
     url: `${config.baseurl}/event/${this.slug || this.id}`,
     type: 'Event',
-    startTime: moment.unix(this.start_datetime).locale(locale).format(),
-    endTime: this.end_datetime ? moment.unix(this.end_datetime).locale(locale).format() : null,
+    startTime: dayjs.unix(this.start_datetime).tz().locale(locale).format(),
+    endTime: this.end_datetime ? dayjs.unix(this.end_datetime).tz().locale(locale).format() : null,
     location: {
       name: this.place.name,
       address: this.place.address
diff --git a/server/initialize.server.js b/server/initialize.server.js
index faa492cc..bfc35b4e 100644
--- a/server/initialize.server.js
+++ b/server/initialize.server.js
@@ -5,6 +5,10 @@ module.exports = function () {
   const log = require('../server/log')
   const settingsController = require('./api/controller/settings')
   const db = require('./api/models/index')
+  const dayjs = require('dayjs')
+  const timezone = require('dayjs/plugin/timezone')
+  dayjs.extend(timezone)
+
   async function start (nuxt) {
 
     if (config.status == 'READY') {
@@ -27,6 +31,8 @@ module.exports = function () {
       await settingsController.load()
     }
 
+    dayjs.tz.setDefault(settingsController.settings.instance_timezone)
+
     let TaskManager
     if (config.status === 'READY' && process.env.NODE_ENV == 'production') {
       TaskManager = require('../server/taskManager').TaskManager