Data & Display Timezone
The event calendar works with local times by default, but ships with support for changing the timezone. The conversions and correct output relies on either of these three external libraries: luxon, moment-timezone and day.js. For installing and using these libraries check out this guide.
There are two angles regarding timezones:
dataTimezone- the calendar expects this format and returns this format. It is'local'by default if the date-times don't contain any timezone information. It can be set globally on the calendar using thedataTimezoneoption, or specifically for the event using thetimezoneproperty of the event data.displayTimezone- the calendar displays the events in this timezone. The date-times will be converted from thedataTimezoneand displayed accordingly. It is'local'by default
Enable switching the timezone in the UI? Learn how to dynamically change timezones →
Demo
Data timezone is
Display timezone is
The local timezone your browser is in:
import { dayjsTimezone } from '@mobiscroll/react';
import dayjs from 'dayjs';
import timezone from 'dayjs/plugin/timezone';
import utc from 'dayjs/plugin/utc';
// Extend Day.js with UTC and timezone plugins
dayjs.extend(utc);
dayjs.extend(timezone);
// Setup Mobiscroll Day.js plugin
dayjsTimezone.dayjs = dayjs;
myEvents = [{
start: '2026-10-24T07:00:00Z',
end: '2026-10-24T09:00:00Z',
title: 'Stakeholder mtg.',
resource: [1, 2, 4]
}, {
start: '2026-10-27T18:00:00Z',
end: '2026-10-27T19:30:00Z',
title: 'Wrapup mtg.',
resource: [2, 3, 5]
}, {
start: '2026-10-24T14:00:00Z',
end: '2026-10-24T18:00:00Z',
title: 'Business of Software Conference',
resource: [1, 3]
}, {
start: '2026-10-25T20:00:00Z',
end: '2026-10-25T21:50:00Z',
title: 'Product Team mtg.',
resource: [2, 3, 4]
}, {
start: '2026-10-23T13:00:00Z',
end: '2026-10-23T15:00:00Z',
title: 'Decision Making mtg.',
resource: [1, 4, 5]
}, {
start: '2026-10-25T13:00:00Z',
end: '2026-10-25T14:00:00Z',
title: 'Quick mtg. with Martin',
resource: 3
}, {
start: '2026-10-27T12:00:00Z',
end: '2026-10-27T16:00:00Z',
title: 'Team-Building',
resource: [1, 2, 3, 4, 5]
}];
function App() {
return <Eventcalendar
dataTimezone='utc'
displayTimezone='local '
timezonePlugin={dayjsTimezone}
view={{ timeline: { type: 'week' }}}
data={myEvents}
/>
}
JSXTSX
import { dayjsTimezone, Eventcalendar, setOptions } from '@mobiscroll/react';
import dayjs from 'dayjs';
import timezone from 'dayjs/plugin/timezone';
import utc from 'dayjs/plugin/utc';
import { useMemo } from 'react';
dayjs.extend(utc);
dayjs.extend(timezone);
dayjsTimezone.dayjs = dayjs;
setOptions({
locale: ,
theme: ' ',
themeVariant: ' '
});
function App() {
const myEvents = useMemo(
() => [
{
start: '2026-10-24T07:00',
end: '2026-10-24T09:00',
title: 'Stakeholder mtg.',
resource: [1, 2, 4],
},
{
start: '2026-10-27T18:00',
end: '2026-10-27T19:30',
title: 'Wrapup mtg.',
resource: [2, 3, 5],
},
{
start: '2026-10-24T14:00',
end: '2026-10-24T18:00',
title: 'Business of Software Conference',
resource: [1, 3],
},
{
start: '2026-10-25T20:00',
end: '2026-10-25T21:50',
title: 'Product Team mtg.',
resource: [2, 3, 4],
},
{
start: '2026-10-23T13:00',
end: '2026-10-23T15:00',
title: 'Decision Making mtg.',
resource: [1, 4, 5],
},
{
start: '2026-10-25T13:00',
end: '2026-10-25T14:00',
title: 'Quick mtg. with Martin',
resource: 3,
},
{
start: '2026-10-27T12:00',
end: '2026-10-27T16:00',
title: 'Team-Building',
resource: [1, 2, 3, 4, 5],
},
],
[],
);
const myResources = useMemo(
() => [
{
id: 1,
name: 'Resource A',
color: '#fdf500',
},
{
id: 2,
name: 'Resource B',
color: '#ff0101',
},
{
id: 3,
name: 'Resource C',
color: '#01adff',
},
{
id: 4,
name: 'Resource D',
color: '#239a21',
},
{
id: 5,
name: 'Resource E',
color: '#ff4600',
},
],
[],
);
const myView = useMemo(
() => ({
timeline: { type: 'week' },
}),
[],
);
return (
<Eventcalendar
dataTimezone="utc"
displayTimezone="local"
timezonePlugin={dayjsTimezone}
data={myEvents}
view={myView}
resources={myResources}
dragToCreate={true}
dragToMove={true}
dragToResize={true}
/>
);
}
export default App;
import {
dayjsTimezone,
Eventcalendar,
MbscCalendarEvent,
MbscEventcalendarView,
MbscResource,
setOptions ,
} from '@mobiscroll/react';
import dayjs from 'dayjs';
import timezone from 'dayjs/plugin/timezone';
import utc from 'dayjs/plugin/utc';
import { FC, useMemo } from 'react';
dayjs.extend(utc);
dayjs.extend(timezone);
dayjsTimezone.dayjs = dayjs;
setOptions({
locale: ,
theme: ' ',
themeVariant: ' '
});
const App: FC = () => {
const myEvents = useMemo<MbscCalendarEvent[]>(
() => [
{
start: '2026-10-24T07:00',
end: '2026-10-24T09:00',
title: 'Stakeholder mtg.',
resource: [1, 2, 4],
},
{
start: '2026-10-27T18:00',
end: '2026-10-27T19:30',
title: 'Wrapup mtg.',
resource: [2, 3, 5],
},
{
start: '2026-10-24T14:00',
end: '2026-10-24T18:00',
title: 'Business of Software Conference',
resource: [1, 3],
},
{
start: '2026-10-25T20:00',
end: '2026-10-25T21:50',
title: 'Product Team mtg.',
resource: [2, 3, 4],
},
{
start: '2026-10-23T13:00',
end: '2026-10-23T15:00',
title: 'Decision Making mtg.',
resource: [1, 4, 5],
},
{
start: '2026-10-25T13:00',
end: '2026-10-25T14:00',
title: 'Quick mtg. with Martin',
resource: 3,
},
{
start: '2026-10-27T12:00',
end: '2026-10-27T16:00',
title: 'Team-Building',
resource: [1, 2, 3, 4, 5],
},
],
[],
);
const myResources = useMemo<MbscResource[]>(
() => [
{
id: 1,
name: 'Resource A',
color: '#fdf500',
},
{
id: 2,
name: 'Resource B',
color: '#ff0101',
},
{
id: 3,
name: 'Resource C',
color: '#01adff',
},
{
id: 4,
name: 'Resource D',
color: '#239a21',
},
{
id: 5,
name: 'Resource E',
color: '#ff4600',
},
],
[],
);
const myView = useMemo<MbscEventcalendarView>(
() => ({
timeline: { type: 'week' },
}),
[],
);
return (
<Eventcalendar
dataTimezone="utc"
displayTimezone="local"
timezonePlugin={dayjsTimezone}
data={myEvents}
view={myView}
resources={myResources}
dragToCreate={true}
dragToMove={true}
dragToResize={true}
/>
);
};
export default App;