May the 4th be with you! Mark Zuckerberg holds team meeting with Chewbacca, Ewoks and a Stormtrooper as world celebrates Star Wars-themed day

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It's not a national holiday, yet it might be an intergalactic one.

May the Fourth, as in 'May the Fourth Be With You' has become a day to celebrate all things Star Wars, especially following last year's revival of the series with Star Wars: The Force Awakens.

And even Facebook CEO Mark Zuckerberg has marked the occasion - by inviting Chewbacca, two Ewoks, a Rebel soldier and an Imperial stormtrooper into the firm's headquarters for a team meeting. 

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May the 4th...! Facebook CEO Mark Zuckerberg has marked the occasion - by inviting Chewbacca, two Ewoks, a Rebel soldier and an Imperial stormtrooper into the firm's headquarters for a team meeting

Fans dressed as movie Star Wars characters pose as they cerebrate the Star Wars Day in Taipei, Taiwan

May 4 is known as Star Wars Day among fans worldwide since the date sounds phonetically similar to the franchise's slogan, 'May the Force Be With You'

One the stars of the current Star Wars trilogy, Daisy Ridley, appeared in a YouTube video surrounded by some of the series' characters to deliver well wishes from the cast of Star Wars: Episode VIII, which is set for release next year. 

While Star Wars VIII actress Daisy Ridley shared a video from the set of Episode VIII with BB-8 and her co-star John Boyega posted a video of twerking Storm Troopers, vet Mark Hamill chose to use the day to help sick kids.

Daisy seen in a video posted to the official Star Wars Instagram page.

The beauty was on the set of Star Wars VIII with BB-8 in the background. She thanked fans for donating to Force For Change. And she also pretended not to be disappointed when she was handed a gift from Boyega.

Turns out that gift was a Star Wars John Boyega doll.

'Over one million raised. One million matched. @daisyridley (and friends) thank you for being a #ForceForChange and wish you a happy #StarWarsDay! #StarWars,' read the caption. 

On Instagram, her flashback photos were all of her.

Daisy's first snap was of her grinning on the set of The Force Awakens as she wears a Jedi-approved turban.

The 24-year-old star captioned the collage: 'HAPPY STAR WARS DAY!'

In the next snap she is holding hands with Boyega in a beige tent. Her caption for this one read: 'HAPPY STAR WARS DAY Y'ALL! @jboyega_ PEANUTS.'

A look at VIII: Daisy Ridley shared a video from the set of Episode VIII to wish everyone a Happy May the 4th

Awkward: Turns out the gift was a Boyega doll and Daisy was not too impressed

Nice scarf: Daisy's first snap was of her grinning on the set of The Force Awakens as she wears a Jedi-approved turban. The 24-year-old star captioned the collage: 'HAPPY STAR WARS DAY!'

A lot of love here: In the next snap she is holding hands with Boyega in a beige tent. Her caption for this one read: 'HAPPY STAR WARS DAY Y'ALL! @jboyega_ PEANUTS'

Jokes: Boyega's Twitter post was playful. It read: 'There is a reason I left these guys #starwarsday'

Awkward: Several dancers in Storm Troopers outfits were seen twerking in an alley way

She also had 15 heart emojis.

Next there was a split screen of her getting her makeup done in the desert as director JJ Abrams looked on.

'HAPPY STAR WARS DAY Y'ALL! This is team Dazzle; Lisa, Amanda and Callie (missing Sonny!) AKA the incredible women that kept me going the whole way through the shoot! Plus JJ in the back being a general BAWS!'

Boyega's Twitter post was playful.

It read: 'There is a reason I left these guys #starwarsday.'

Several dancers in Storm Troopers outfits were seen twerking in an alley way.

Hamill, who plays Luke Skywalker in all of the Star Wars films - including 2017's Episode VIII - shared a photo with a sick child.

His caption read: 'Don't donate for me-Donate for THIS guy! #AwesomeOscar #ForceForChange #GOSH #StarWarsDay.'

What a trooper: Hamill, who plays Luke Skywalker in all of the Star Wars films - including 2017's Episode VIII - shared a photo with a sick child. His caption read: 'Don't donate for me-Donate for THIS guy! #AwesomeOscar #ForceForChange #GOSH #StarWarsDay'

He's a favorite! Mark was also with Naheem Abidoye at the ICAP MediCinema, Guy's Hospital in London celebrating Star Wars Day for Force for Change

Like many Star Wars characters, 'May the Fourth' comes with an interesting origin story. 

One of the earliest known references to the day followed the May 4, 1979, election of Margaret Thatcher as Britain's prime minister, according to a post on the official Star Wars website. 

Thatcher's party took out an ad in the London Evening News with the message, 'May the Fourth Be With You, Maggie. Congratulations,' the website said, adding that the day took off once the Internet began connecting fans.

The day has been a trending topic on social media. 

Comedy Central's '@midnight' got things started by launching a #StarWarsSongs hashtag, asking fans to come up with Star Wars themed song titles. 

Some of the responses include 'Whiskey in the Jar Jar' and 'When You Wish Upon a Death Star.'

NASA got in on the fun with a blog comparing real planets to the ones depicted in Star Wars, including Saturn's moon, Mimas, which has become known as the 'Death Star' moon thanks to its distinctive crater.

Retailers are trying to turn fan enthusiasm into a profit. Many, including Wal-Mart, Target and Toys 'R' Us are offering promotions on Star Wars related items this week.

It is celebrated globally (fans in Taiwan pictured), with new-found excitement after the latest Star Wars film