OCTOBER IS OFFICIALLY the new June as far as weddings go. And Oct. 19 is the day that most couples in the U.S. will get married. This Saturday, more than 34,000 weddings will be held, according to wedding websites The Knot and Wedding Wire. A total of 33,874 couples are registered with the two websites, but many more couples will say vows independent of the popular sites. The big shift from June…