Today — October 21, 2015 — is the day Marty McFly famously traveled to the future in “Back to the Future Part II” and the White House wants your help celebrating this “historic and cinematic occasion”:

Groan. Never let a fictional holiday go to waste, heh?

Here’s the schedule of today’s online activities for “nerding out together” with the White House. Maybe after this we’ll finally know why the government won’t let us have flying cars:

9:30 A.M. ET: A GOOGLE+ HANGOUT CONVERSATION ON TIME TRAVEL

Featuring: OSTP Deputy Director for Technology and Innovation Tom Kalil, Professor Tim Ralph of the University of Queensland in Brisbane, Australia, and Mr. Martin Ringbauer, a PhD student at the University of Queensland.
What you can do: Watch live right here!

10:30 A.M. ET: A TWITTER CONVERSATION ON AUTONOMOUS VEHICLES

Featuring: Deputy Chief Technology Officer Ed Felten and OSTP Deputy Director for Technology and Innovation Tom Kalil.
What you can do: Follow @EdFelten44 and @WhiteHouseOSTP — and weigh in on the conversation on Twitter using #BackToTheFutureDay.

11:30 A.M. ET: A TWITTER Q+A ON THE FUTURE OF WOMEN IN STEM

Featuring: Chief Technology Officer Megan Smith, NASA Chief Scientist Dr. Ellen Stofan, OSTP Principal Assistant Director for Environment and Energy Tammy Dickinson, and L’Oréal’s 2015 U.S. Women in Science fellows.
What you can do: Follow @USCTO and @LOrealUSA on Twitter, and weigh in on what you’d like to see women doing in STEM fields in 2045 using hashtag #WomenInScience.

1:00 P.M. ET: A GOOGLE+ HANGOUT ON UNDERSTANDING THE HUMAN BRAIN

Featuring: OSTP Assistant Director for Neuroscience and Mental Health Monica Basco; OSTP Senior Policy Advisor Knatokie Ford; OSTP Assistant Director for Defense Programs (and neuroscientist) Chris Fall; Karl Deisseroth M.D., Ph.D., the D.H. Professor of Bioengineering and of Psychiatry and Behavioral Sciences at Stanford University; Kevin Pearce, Snowboarder and BRAIN initiative activist; and Dr. Julie Brefczynksi-Lewis, Research Assistant Professor at the West Virginia University School of Medicine.
What you can do: Watch live right here.