One of my views groups by date, and I was asked to add the day to the front of it, such as "Wednesday October 26, 2016" or "Wednesday 10-26-2016".
I've tried using a concatenate and a bunch of text fields, but no dice. Here is where I stopped:
=TEXT(WEEKDAY([Due Date]),"dddd")&" "&MONTH([Due Date])&" "&DAY([Due Date])&", "&YEAR([Due Date])

WEEKDAYseems to only work with=TEXTprefix, which again requires the use ofSingle Line of Text. However, I'd suggest you to have a look at this post: https://social.technet.microsoft.com/wiki/contents/articles/16827.sharepoint-2010-group-by-view-with-order-by-on-datetime-field.aspx. It provides a workaround to sort the grouping by date. The grouping would be done for the original[Due Date]column, but on the view you could have the calculated column visible. – moe Oct 26 '16 at 11:32