I know that this is very short notice, but tomorrow is the Vietnamese Lunar New Year Celebration or Tet.
You can find more information about it on http://sf.funcheap.com/vietnamese-lunar-year-tet-festival-sf/
Here is the list of activities: Events include:
Grand Opening Ceremony Dragon and Lion Dances Firecracker Show Traditional Tet Rituals Health Fair Center Li Xi money (Red Envelopes) Give-away to children Multi-ethnic Live Entertainment Raffle Celebrity Music Performances Children Traditional Costume Show Karaoke Contest Youth Performances Arts and Craft Exhibitions
The festivities start at 10am and are all day until 6pm. If any of you are interested, we could perhaps meet up outside of the BART Civic Center station at the UN plaza at lunchtime and go together to the event.