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A reproduced newspaper is displayed during a party for the 30th anniversary of the movie "Back to the Future" in São Paulo, Brazil, Oct. 17, 2015. Getty Images

Grab your acid-washed jeans, puffy vest and hoverboard: Wednesday is Back to the Future Day. The holiday is centered around the date Marty McFly traveled to in the 1989 fictional movie "Back to the Future Part II," Oct. 21, 2015, but the events in its honor are very real. Companies like Lyft and Pepsi are joining movie fans across the country in celebrating.

Nearly 1 million people have signed up for more than 4,500 Facebook events related to Back to the Future Day, according to a Facebook spokeswoman. In Bellingham, Washington, they're putting on a "Back to the Future" musical. In Toronto, they're throwing an "Enchantment Under the Sea" dance like the one in the movie. In Houston, they're having a hoverboard contest.

AMC theaters are showing the trilogy starting at 4:29 p.m. local time, and Universal Studios in Los Angeles will give tours of its back lot while auctioning off props from the movies in a five-day "We're Going Back" event. Here are other upcoming "Back to the Future" events to check out:

Reston, Virginia, has renamed itself Hill Valley in honor of the fictional town where the movie is set. Organizers with the Washington West International Film Festival, which runs through Oct. 27, will host actor Christopher Lloyd as well as co-writer Bob Gale on the red carpet for an anniversary showing.

People in Burbank, California, will participate in the Million McFly March from 9 a.m. to 6 p.m. local time. They'll hold a raffle to benefit Parkinson's research.

Lyft users in New York City can request "McFly Mode" to get a 20-minute trip in a DeLorean between 11 a.m. and 5 p.m. local time with the car service.

In that vein, a themed cruise will launch from Fort Lauderdale, Florida, Nov. 7 and include "Back to the Future" activities like an "Enchantment Under the Sea" dance and a DeLorean owners meeting. Jeffrey Weissman, who played George McFly; Don Fullilove, who played Mayor Goldie Wilson; and Harry Waters Jr., who played Marvin Berry, will be on board. The cruise is a fundraiser for Team Fox, a group that supports the Michael J. Fox Foundation for Parkinson's Research.

On Wednesday in New York City, Dallas and Hollywood, California, Toyota will show off its new version of Marty McFly's dream truck while also unveiling the updated Mirai FCV.

Over the next few months, Film Concerts Live will show "Back to the Future" accompanied by a full symphony orchestra performing the soundtrack. The tour will stop in places like Indianapolis; St. Louis; Melbourne, Australia; Denver; Mexico City and Dublin.

In 13 American cities next month, filmmakers will show "Back in Time," a documentary that "offers the ultimate fan look into the out-sized cultural impact of the 'Back to the Future' trilogy," according to a news release. The tour includes stops in Los Angeles, Las Vegas and Boston.

More than 1,000 people were set to attend a "Back to the Future" party in Atlanta with trivia, drinks and a 1950s DJ. Organizers also will be raffling off a framed version of the letter Marty wrote Doc about the future.

The National Space Center in London will host a 1950s car show, dance lessons, pop-up hairdressers and science lessons for $15. Stick around for a screening of the movie in the Sir Patrick Moore Planetarium. Then stop by the Leicester Square Theater to see comedian Nathan Cassidy perform his three-part "Back to the Future" set.

Not in any of these places? Go online to order Pepsi Perfect, the fictional futuristic drink from the films made real, for $20.15.

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