In the dystopian city of Logan's Run, citizens are executed at age thirty in a ceremony called Carousel — the date encoded in the astrological zodiac system the future society uses for its calendar. 'Capricorn 29' designates those whose Lastday falls on the 29th day of Capricorn, corresponding to around January 18th, making it the date that carries the film's entire existential weight: a world where your death date is stamped on your palm at birth.