On January 1, 2011, Larry files a UCC-1 financing statement against David indicating David's equipment as collateral. At this point, David doesn't even know Larry, has not given him a security interest, and has not authorized this filing. On February 1, 2012, David meets and borrows money from Larry and signs a security agreement listing equipment as collateral (which, under UCC 9-509, automatically authorizes the filing of a financing statement against equipment). What is the relevant date for determining Larry's priority? The language of Article 9