In-N-Out Burger opened its first restaurant in Baldwin Park, Los Angeles, US.
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The state of California began issuing marriage licenses to same-sex couples.
Clint Eastwood was elected as Mayor of Carmel, California.
Lake Merced, California, was found to have sunk 30 feet (9 meters).
Ronald Reagan is sworn in as Governor of California.
Two rival driverless taxi companies were given approval to operate 24/7 in San Francisco, California.