icalendar2fullcalendar | Convert iCalendar ics to FullCalendar json using ical.js | Calendar library

I am using FullCalendar and iCalendar2FullCalendar to feed in the .ICS files from our various iCloud accounts. This works great at rendering all the events from our shared calendars.

I’m making a small display and am using the ‘agendaDay’ view. I like that all day events sit at the top and can see any scheduling conflicts below.

However, I have some events that run over a number of days, for example from 1700hrs Friday to 1900hrs Sunday my daughter will be with me. On the agendaDay view this will show as a solid bar throughout all of saturday across each hour, and I’m wondering if there is a way to render events over a certain duration as an all day event instead?

I’ve played with the eventRender callback but whilst I’m able to change the event properties the event still renders as if the changes were never made.

Here’s my code, in this revision i’ve applied a fixed date in the hope it would draw as an all day event but no luck!: