diff --git a/programmerbar-web/src/lib/date.ts b/programmerbar-web/src/lib/date.ts
index d0c1406..4e1109a 100644
--- a/programmerbar-web/src/lib/date.ts
+++ b/programmerbar-web/src/lib/date.ts
@@ -1,4 +1,4 @@
-import { toZonedTime } from 'date-fns-tz';
+import { toZonedTime, fromZonedTime } from 'date-fns-tz';
 import { format } from 'date-fns';
 
 export type Dateish = string | Date | number;
@@ -33,13 +33,18 @@ export const toLocalDateTimeString = (date: Dateish): string => {
 };
 
 export const parseDateTimeLocal = (value: string): Date => {
-	return new Date(value);
+	return fromZonedTime(value, OSLO_TIME_ZONE);
 };
 
 export const toUtcISOStringFromLocal = (value: string) => {
-	return new Date(value).toISOString();
+	return fromZonedTime(value, OSLO_TIME_ZONE).toISOString();
 };
 
 export const ISOStandard = (date: Dateish) => {
 	return toLocalDateTimeString(date);
 };
+
+export const toDateTimeLocalInput = (date: Dateish): string => {
+	const utcDate = ensureDate(date);
+	return format(utcDate, "yyyy-MM-dd'T'HH:mm");
+};
diff --git a/programmerbar-web/src/routes/(portal)/portal/arrangementer/[id]/rediger/+page.svelte b/programmerbar-web/src/routes/(portal)/portal/arrangementer/[id]/rediger/+page.svelte
index e87b1ce..ac21235 100644
--- a/programmerbar-web/src/routes/(portal)/portal/arrangementer/[id]/rediger/+page.svelte
+++ b/programmerbar-web/src/routes/(portal)/portal/arrangementer/[id]/rediger/+page.svelte
@@ -7,7 +7,7 @@
 	import Checkbox from '$lib/components/ui/Checkbox.svelte';
 	import { enhance } from '$app/forms';
 	import { CreateEventState } from '$lib/states/create-event-state.svelte';
-	import { ISOStandard } from '$lib/date';
+	import { toDateTimeLocalInput } from '$lib/date';
 	import { beforeNavigate } from '$app/navigation';
 	import { onMount } from 'svelte';
 
@@ -19,14 +19,14 @@
 
 	onMount(() => {
 		eventState.name = data.event.name;
-		eventState.date = ISOStandard(data.event.date);
+		eventState.date = toDateTimeLocalInput(data.event.date);
 		eventState.description = data.event.description || '';
 		eventState.shouldBePublic = !!(data.event.description || data.event.slug);
 
 		data.event.shifts.forEach((shift) => {
 			eventState.shifts.push({
-				startAt: ISOStandard(shift.startAt),
-				endAt: ISOStandard(shift.endAt),
+				startAt: toDateTimeLocalInput(shift.startAt),
+				endAt: toDateTimeLocalInput(shift.endAt),
 				users: shift.members.map((member) => ({
 					id: member.user.id,
 					name: member.user.name