Quoting from "Generations," page 298:
"The Boom Awakening ... The awakening ebbed sharply in the late 1970s with the growing social and economic pessimism that Boomer Patrick Caddell labeled 'malaise,' and it ended altogether in 1980 ... Reagan's election (and his endorsement by the Boom) marked the acceptance of rising-adult social roles by a no-longer-youthful cadre of 1960s kids."
On this basis the Unraveling can literally be dated:
November 4, 1980 - September 11, 2001