There will be another specialty in Ponoma, here is the link to the information, just click on the specialty show calendar on the left side of the screen. It is near the bottom so you will have to scroll a bit. Then you can click on the "Yorkshire Terrier Club of Los Angeles" to get more information!
Yorkshire Terrier Club of America
Then you can get the all breed information by selecting the show for each day from the Jack Bradshaw website.
From there you should be able to get the judging schedule.
Jack Bradshaw - Dog Show Superintendents