It's the big July Pot-luck Picnic Brunch, followed by a trunk show by Rachel D.K. Clark. The club requests a $5 donation from non-members for the meeting itself, and the trunk show is $15 (no registration cap, no membership requirement, it can be signed up for at the brunch).
San Jose Buddhist Church Betsuin's Obon is also this weekend, but it's Saturday and Sunday. We've never gone before, but I've heard it's one of the iconic Japanese festivals of the west coast.