SQL Server – Using CREATE TYPE to create a new type that matches `time` and datetime`

I would like to create an MSSQL data type using CREATE A TYPE which combines time and date hour.

An example of a string is: Nov 23, 2009 12:00 PM EST

It would look like something like FORMAT (@ field, MMM dd, yyyy hh: mm: ss tt).

Is it possible to do that with CREATE A TYPE or is another function necessary?