---
title: Event::setAllDay
---

Sets whether an event is considered all-day.

<div class='spec'>

event.setAllDay( *bool*, [ *settings* ] )

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`bool` must be `true` or `false`.

If converting to `allDay:false`, if the event's start and end dates will have their times set to 00:00:00.

If there are other events that share the same `groupId`, those events' dates will be similarly modified.

The `settings` object is an optional parameter that can contain a single flag:

- `maintainDuration` - operates the same way as [allDayMaintainDuration](allDayMaintainDuration)