Section 2. Congress shall have power to enforce this article by appropriate legislation.[2]
You appear to have some problem with the 13th? None of us are supposed to have a problem ~ only Democrats and their running dog lackeys have a problem with slavery. They love slavery. They love to regulate. They love to take people and turn them into nothing more than lawn boys and bedwarmers.
See this vanity.
But if you think it looks bad to choose the 13th, I'd go for the 16th instead :-)
Cheers!
...oh, and Merry Christmas!