This information was shared by Heather in the Grief and Loss Forum, I wanted to post it here as well and include some CA specifics.
This was taken from The Compassionate Friends website (http://www.compassionatefriends.org/)
"The ninth annual Worldwide Candle Lighting, held the second Sunday in December around the globe, is an opportunity for bereaved families everywhere to remember and celebrate the lives of children who have gone too soon. Families are invited to attend any of the hundreds of formal services throughout the United States and the world or to light a candle in the privacy of their home. You do not need to be a member of The Compassionate Friends to participate."
Here is information on services that will be held in California: