Today is April 20, but to many it is the unofficial weed-themed holiday “420”.

The celebratory day of marijuana all started when California high schools would use the code “420” to plan to meet up at 4:20 pm to smoke with friends, because it was the perfect window of opportunity where they were out of school but their parents weren’t home from work. Over the years, that time translated over to April 20, and people have been embracing the cannabis-filled day ever since.

Many celebrities have become very open about their approval of the drug and their smoking habits, they even shared celebratory tweets with fans.

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Snoop Dogg, rapper and iconic weed enthusiast, tweeted the night before reminding fans to leave out some milk and cookies, à la Santa Claus.

 

Rock band Black Sabbath members Ozzy Osbourne and Tommy Iommi used this opportunity to share an old photo of them with large forks, digging into a mound of weed.

 

They weren’t the only ones who shared throwback photos. Drake Bell tweeted a picture of him while in character as “Totally Kyle” from the Nickelodeon show All That, wishing everyone “Happy 420 from your favorite Stoner!”

Former Brady Bunch star Maureen McCormick shared an old photo of her character Marcia and Cindy (Susan Olsen) munching on some snacks, along with the simple caption “Happy 420.”

 

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Former One Direction member Louis Tomlinson acknowledges that the weather is perfect today for the holiday.

 

As of today, possession of marijuana is a criminal offense on a federal level, though it is legal in many states. However, Senator Chuck Schumer (D-N.Y.) announced today that his plan to decriminalize marijuana on a federal level.