How to get spelled out Day of Week in aggregate

How to get spelled out Day of Week in aggregate

  

I'm trying to add a custom column in an aggregate to display the text day of week (Monday, Tuesday, etc). Does anyone know how to do that?
Why do you need to do this in an aggregate?  If you need to display day of week to a user, just use an expression with the built-in function DayOfWeek(<dt>) where <dt> is the date field from the aggregate.

Hope this helps,
Curt