Microsoft IT help determined since this was a synced calendar (from hotmail account) I have zero permissions to the calendar. A bit silly that I cannot edit, move, or delete from Outlook. Anyway, resolved.
I'm having issues adding events to the default holiday calendar that came with Outlook 2013 when I installed it. I'm on an AsusT100 Tablet and installed Outlook through Office 365 Home Edition.
I attached a screenshot of the error I get when I try to add an event to the holiday...