Marty, fire up the flux capacitor! Christmas has come early for fans of the time-hopping Back to the Future trilogy, with a raft of special events to mark what’s being called ‘Back to the Future Day’. In another ungentle reminder of the arrow of time’s unstoppable flight, having already sailed past Judgement Day (Aug 29, 1997) and the X-Files‘ alien invasion (Dec 22, 2012), this Wednesday marks the date that Doc and Marty crash-landed into the future in the 1989 sequel: 21/10/15 at 4:29pm. It’s also the 30th anniversary of the first film’s release (handy that). Robert Zemeckis’ Back to…