---
title: "Javascript Event calendar Gregorian, Jalali & Hijri Example | Mobiscroll"
component: "Event calendar"
framework: "JavaScript"
library_version: "6.1.5"
url: "https://demo.mobiscroll.com/javascript/eventcalendar/gregorian-jalali-hijri"
---

# Gregorian, Jalali & Hijri - JavaScript Event calendar demo

Show events in Gregorian, Jalali, or Hijri with the Javascript event calendar — switch calendar systems to support Persian, Farsi and Arabic. Plain JavaScript API.

- [Live demo](https://demo.mobiscroll.com/javascript/eventcalendar/gregorian-jalali-hijri)
- [View code on GitHub](https://github.com/acidb/mobiscroll-demos-javascript/tree/main/src/demos/eventcalendar/calendar-view/gregorian-jalali-hijri)
- This demo in other frameworks: [jQuery](https://demo.mobiscroll.com/jquery/eventcalendar/gregorian-jalali-hijri.md), [Angular](https://demo.mobiscroll.com/angular/eventcalendar/gregorian-jalali-hijri.md), [React](https://demo.mobiscroll.com/react/eventcalendar/gregorian-jalali-hijri.md), [Vue](https://demo.mobiscroll.com/vue/eventcalendar/gregorian-jalali-hijri.md)

## Description

The event calendar supports multiple calendar systems. You can control it with the [`calendarSystem`](https://mobiscroll.com/docs/javascript/eventcalendar/api#localization-calendarSystem) setting, and it supports the following options:

- **Gregorian** - it is included by default
- **Jalali** - it is the default system of the Persian calendar and is included within the Farsi language pack
- **Hijri** - it is included in the Arabic language pack

**Interested in localization?** [Explore this example →](https://demo.mobiscroll.com/javascript/eventcalendar/localization)

## What this demo shows

- A desktop month-view event calendar with a segmented control for switching between Gregorian, Jalali, and Hijri calendar systems.
- **Calendar system picker** The left side of the calendar shows a "Pick a calendar system" label with three options, where Gregorian is selected by default and choosing another option (Jalali or Hijri) updates the calendar system.
- **Calendar header** The header shows the current month and year on the left, and blue month navigation arrows with a `Today` button (for jumping back to the current date) between them on the right. 
- **Event labels** Day cells render events as labels with different colors and styles to distinguish all-day, multi-day, and timed events.
- **Overflow handling** The number of visible event labels depends on the available height in each day cell. Additional events are collapsed behind an `X more` link.
- **Popover** Clicking the `X more` link opens a popover that shows the hidden events for that day.
- **Label interaction** Hovering over or clicking an event label selects it and highlights the selected label.
- **Day cell states for future days** Hovering a day cell highlights the day number with a gray background, while clicking the empty part of the cell selects the day and highlights the day number with a blue background.
- **Month navigation** The month can be changed either with the header arrows or by clicking and dragging the calendar left or right.

## Best for

- **Regional user experiences** Products that need to present dates in the calendar system users already rely on, such as Gregorian for international audiences, Jalali for Persian-speaking users, or Hijri for Arabic-speaking users.
- **Localized scheduling flows** Booking, planning, and event management interfaces where users need to browse months, review events, and select dates in a familiar calendar system.

## Tutorial

### Pick a calendar system

- (x) Gregorian
- ( ) Jalali
- ( ) Hijri

```js
locale: mobiscroll.localeEn
```

With "Jalali":

```js
calendarSystem: mobiscroll.jalaliCalendar,
locale: mobiscroll.localeFa
```

With "Hijri":

```js
calendarSystem: mobiscroll.hijriCalendar,
locale: mobiscroll.localeAr
```

## API used in this demo

- [`theme`](https://mobiscroll.com/docs/javascript/eventcalendar/api#opt-theme) - option
- [`themeVariant`](https://mobiscroll.com/docs/javascript/eventcalendar/api#opt-themeVariant) - option
- [`clickToCreate`](https://mobiscroll.com/docs/javascript/eventcalendar/api#opt-clickToCreate) - option
- [`dragToCreate`](https://mobiscroll.com/docs/javascript/eventcalendar/api#opt-dragToCreate) - option
- [`dragToMove`](https://mobiscroll.com/docs/javascript/eventcalendar/api#opt-dragToMove) - option
- [`dragToResize`](https://mobiscroll.com/docs/javascript/eventcalendar/api#opt-dragToResize) - option
- [`eventDelete`](https://mobiscroll.com/docs/javascript/eventcalendar/api#opt-eventDelete) - option
- [`locale`](https://mobiscroll.com/docs/javascript/eventcalendar/api#localization-locale) - option
- [`calendarSystem`](https://mobiscroll.com/docs/javascript/eventcalendar/api#localization-calendarSystem) - option
- [`setEvents`](https://mobiscroll.com/docs/javascript/eventcalendar/api#method-setEvents) - method

## Code

### JS

```js
mobiscroll.setOptions({
  theme: 'ios',
  themeVariant: 'light'
});

var gregorian = mobiscroll.eventcalendar('#demo-gregorian', {
  clickToCreate: true,
  dragToCreate: true,
  dragToMove: true,
  dragToResize: true,
  eventDelete: true,
  locale: mobiscroll.localeEn,
});

var jalali = mobiscroll.eventcalendar('#demo-jalali', {
  clickToCreate: true,
  dragToCreate: true,
  dragToMove: true,
  dragToResize: true,
  eventDelete: true,
  calendarSystem: mobiscroll.jalaliCalendar,
  locale: mobiscroll.locale.fa,
});

var hijri = mobiscroll.eventcalendar('#demo-hijri', {
  clickToCreate: true,
  dragToCreate: true,
  dragToMove: true,
  dragToResize: true,
  eventDelete: true,
  calendarSystem: mobiscroll.hijriCalendar,
  locale: mobiscroll.locale.ar,
});

mobiscroll.getJson(
  'https://trial.mobiscroll.com/events/?vers=5',
  function (events) {
    gregorian.setEvents(events);
    jalali.setEvents(events);
    hijri.setEvents(events);
  },
  'jsonp',
);
```

### HTML

```html
<div mbsc-page>
  <div class="mbsc-grid">
    <div class="mbsc-row">
      <div class="mbsc-col-sm-12 mbsc-col-md-4">
        <div class="mbsc-form-group">
          <div class="mbsc-form-group-title">Gregorian calendar</div>
          <div id="demo-gregorian"></div>
        </div>
      </div>
      <div class="mbsc-col-sm-12 mbsc-col-md-4">
        <div class="mbsc-form-group">
          <div class="mbsc-form-group-title">Jalali calendar</div>
          <div id="demo-jalali"></div>
        </div>
      </div>
      <div class="mbsc-col-sm-12 mbsc-col-md-4">
        <div class="mbsc-form-group">
          <div class="mbsc-form-group-title">Hijri calendar</div>
          <div id="demo-hijri"></div>
        </div>
      </div>
    </div>
  </div>
</div>
```

## Implementation notes

- Render three separate `Eventcalendar` instances on one page in a responsive 3-column grid (`mbsc-col-sm-12 mbsc-col-md-4`), each inside an `mbsc-form-group` with an `mbsc-form-group-title`. Use `view: { calendar: { labels: true } }` for all three. Wrap the page in a `Page` component.
- **Gregorian instance** - no `calendarSystem` needed (Gregorian is the default). Angular and JS/jQuery also pass `locale: localeEn` explicitly; React and Vue omit it.
- **Jalali instance** - pass `calendarSystem: jalaliCalendar` and `locale: localeFa`, both imported from the Mobiscroll package. JS/jQuery: access as `mobiscroll.jalaliCalendar` and `mobiscroll.locale.fa`.
- **Hijri instance** - pass `calendarSystem: hijriCalendar` and `locale: localeAr`, both imported from the Mobiscroll package. JS/jQuery: access as `mobiscroll.hijriCalendar` and `mobiscroll.locale.ar`.
- Load events once from `https://trial.mobiscroll.com/events/?vers=5` via JSONP using `getJson(url, callback, 'jsonp')`. Angular: use `HttpClient.jsonp()` instead. For state-based frameworks, share one reactive events array bound to all three instances. For the imperative API (JS/jQuery), call `inst.setEvents(events)` on each of the three instances inside the callback.

## Run it in your project

1. If not signed up yet, or don't own a license, you can [start a free trial](https://mobiscroll.com/starttrial).

2. Clone the repository:

   ```
   git clone https://github.com/acidb/mobiscroll-demos-javascript.git
   ```

3. If not installed yet, install the Mobiscroll CLI from NPM:

   ```
   npm install -g @mobiscroll/cli
   ```

4. Config Mobiscroll - open a terminal window in the root directory and run:

   ```
   mobiscroll config javascript
   ```

5. Install dependencies - open a terminal window in the root directory and run:

   ```
   npm install
   ```

6. Run the project:

   ```
   npm run dev
   ```

On a trial, add `--trial` to the config command: `mobiscroll config javascript --trial`.

Running a demo locally requires a Mobiscroll trial or a license; setup is per framework at https://mobiscroll.com/docs/javascript/getting-started/installation

## Related demos

- Previous: [Localization](https://demo.mobiscroll.com/javascript/eventcalendar/localization.md) - Localize a Javascript event calendar — switch locales to update date and time formats, button labels, and RTL layout. All settings overridable.
- Next: [Event Hooks](https://demo.mobiscroll.com/javascript/eventcalendar/event-hooks.md) - See which lifecycle hooks the Javascript event calendar fires on create, drag, hover, and click — interactions are tracked in a live event log.