Hello. I was just going over my decree and realized that the certificate is dated wrong. It was dated March 5th 2013 when the paper was filed and completed on the 10th of January 2012. So how was the clerk able to sign the certification on the 5th of March 2013. Does this void the decree?

No the decree is still valid. Is there a problem such as an overlap of marriage? If not then don't worry about it. It is actually not valid until it is signed by a judge.

That is one reason dates can be different.