Creating an all-day event
An all-day event is an event that lasts an entire day or longer. For example, if you plan a seminar or a training for two days, you can select a start and end date and check the All-day event feature instead of entering the time.
This guide will show you how to create an all-day event in your Calendar.
Access the Calendar
Enter your portal and click the Calendar 
icon at the top of the page.
Add a new event
Click with the left mouse button the necessary day to quickly create a new all-day event specifying basic information.
Configure your event settings
Enter as mauch information as you wish about your event. Type in a title. Set start and end dates for your event in the From: and To: fields, respectively, using the keyboard or clicking the corresponding 
icon and selecting the necessary date.
Make sure that the All-day event option is checked.
If you need to invite guests, set a recurrence period, change the reminder settings, share your event with colleagues, or add a description, you can switch to the advanced mode by clicking the Details link.
To publish your event, just click the Save button at the bottom of the window. The created event will be immediately added to your calendar.
Edit the created all-day event
The all-day events are displayed at the top of each day and highlighted with a color associated with a calendar the event is added to.
To change some all-day event settings, proceed as for a single event. Click the all-day event title and use the Edit button at the bottom of the pop-up window to start editing.
To apply the changes you made, use the Save button.
You can also change the all-day event end date right in your calendar without opening the editing window as described above.
Place the mouse cursor at the right boundary of the event box. The cursor will turn into a bidirectional arrow. Then, without releasing the mouse button, drag it to change the event end date.
Delete an all-day event
To delete an all-day event, proceed as for a single one. Click the all-day event title and use the Delete button at the bottom of the pop-up window.
The selected event will be removed from your calendar.
Watch video
How to create an all-day event with ONLYOFFICE?
This guide will show you how to create an all-day event in your Calendar.