Funny -- for Steve Parkes, The Sixties lasted from 1962 to 1968. I usually say the real "Sixties" ran from about '65 to '72.

Is this a UK-vs-US thing, or was I just a bit behind the times?

My rationale for the dates I cite: "Summer-of-Love" through abolition of the military draft ~ with 1968 right in the middle as the peak year of several types of insanity.