WASHINGTON — This is heavy.

The Fairfax County Board of Supervisors has passed a resolution to ceremoniously change the name of Reston, Virginia to “Hill Valley” from October 21 to 25.

The nod is in honor of the fifth annual Washington West International Film Festival’s tribute to the 30th anniversary of the Back to the Future franchise.

October 21, 2015 is the date to which main characters Doc Brown and Marty McFly travel in Back to the Future Part II, and the entire franchise was set in the fictional California town of Hill Valley.

The festival, with the support of Universal Pictures, will host a red carpet screening of Back to the Future on Oct. 25.

Christopher Lloyd, the actor who played Doc Brown, and others who worked on the films will be in attendance.

The festival plans to donate 100 percent of box office net proceeds from the #GiveBackToTheFuture red carpet screening to the Save the Clocktower Fund the Michael J. Fox Foundation for Parkinson’s Research.

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