Matrimonio de Agustin Gonzalez y Maria Josefa Montoya

I have looked and looked, and I cannot find the marriage record for Agustin Gonzalez and Maria Josefa Montoya. FamilySearch gives the marriage date as 28 February 1783. There are no certificates with that date. https://familysearch.org/ark:/61903/3:1:S3HY-DTQ7-V7F?i=57&wc=M6QF-L68%3A64894501%2C64894502%2C107423301%3Fcc%3D1502404&cc=1502404
So I thought maybe it's recorded a few days later. But now I have looked twice through all of 1783, 1782 and 1784. No luck.

Maybe I am just missing it. Help!

Daniel