All day events option - Sharepoint online

The "All Day" option depends on how you're creating and displaying your calendar events in SharePoint Online.

If you're using the Events web part: The modern Events web part does include an "All Day" toggle when creating events. When you click "Add event," you'll see this option right below the start/end time fields.

If you're using a SharePoint list with Calendar view: Unfortunately, the Calendar view for SharePoint lists doesn't have a built-in "All Day" option. However, here are workarounds:

1. Time-based approach: Set your event from 12:00 AM to 11:59 PM (though I understand this isn't ideal)
2. Custom solution: Create a Yes/No column called "All Day Event" and use conditional formatting or Power Automate to handle the display logic

My recommendation: For modern SharePoint sites, I'd suggest using the Events web part instead of the Calendar view.

Should be an option by default