The Latest on recreational marijuana sales in California (all times local):

6:45 a.m.

Berkeley Mayor Jesse Arreguin was on hand for a ribbon-cutting ceremony as his city began selling marijuana legally on New Year's Day.

The mayor was joined by state Sen. Nancy Skinner as pot sales began early Monday at Berkeley Patients Group, one of the oldest dispensaries in the nation.

Customers began lining up before dawn to be among the first to purchase legal marijuana in state.

A law allowing California's first legal retail pot sales went into effect at 12:01 a.m.

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5:45 a.m.

About 100 people are lined up in the parking lot of the Harborside marijuana dispensary in Oakland, California.

They're waiting for the doors to open at 6 a.m. Monday so that they can be among the first customers to buy legal pot in the state.

The crowd sipped coffee and munched doughnuts, braving overnight temperatures in the mid-40s (around 6 degrees Celsius).

The dispensary says the first customers will receive special gifts. Harborside is one of about 90 California businesses that received state licenses to open on New Year's Day.

A law allowing the state's first legal retail pot sales went into effect at 12:01 a.m.

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12:40 a.m.

Some Californians are raising blunts instead of glasses as they usher in the new year.

A law allowing the state's first legal retail pot sales went into effect at 12:01 a.m. Monday.

Johnny Hernandez, a tattoo artist from Modesto, was celebrating New Year's Eve by smoking "Happy New Year blunts" with his cousins.

Hernandez, who is a medical marijuana user, says legalizing recreational pot is "something we've all been waiting for."

The 29-year-old says he also hoped that the legalization of recreational, adult-use marijuana will help alleviate a stigma some believe still surrounds marijuana use.

About 90 businesses received state licenses to open on New Year's Day. They are concentrated in San Diego, Santa Cruz, the San Francisco Bay Area and the Palm Springs area.

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12 a.m.

The arrival of the new year in California brings with it broad legalization of marijuana.

The law comes two decades after California became the first state to legalize medical marijuana.

So-called recreational pot is now legal for adults 21 and older. Individuals can grow up to six plants and possess as much as an ounce.

Finding a retail outlet to buy non-medical pot in California won't be easy, at least initially. Only about 90 businesses received state licenses to open on New Year's Day. They are concentrated in San Diego, Santa Cruz, the San Francisco Bay Area and the Palm Springs area.

Los Angeles and San Francisco are among the many cities where recreational pot won't be available right away. Other places, including Fresno, Bakersfield and Kern County, outlawed recreational marijuana sales.