---
title: defaultAllDayEventDuration
---

A fallback duration for all-day [Event Objects](event-object) without a specified `end` value.

<div class='spec'>

[Duration](duration-object), *default*: `&#123; days: 1 &#125;`

</div>

If an event does not have an `end` specified, it will appear to be this duration when rendered.

The actual `end` of the event will remain unset unless [forceEventDuration](forceEventDuration) has been set to `true`.

This setting only affects events with `allDay` equal to `true`. For timed events, use [defaultTimedEventDuration](defaultTimedEventDuration).