Nathaniel Dorsky shot the footage for what would become his silent tone poem, “Hours for Jerome,” between 1966 and 1970. He edited that footage over a two-year period. The film’s title evokes the liturgical “Book of Hours,” a medieval series of devotional prayers recited at eight-hour intervals throughout the day. Dorsky’s personal devotional loosely records the daily events of the filmmaker and his partner as an arrangement of images, energies and illuminations. “Part 1” presents spring through summer and “Part 2” looks at fall and winter — a full year in 45 minutes. Named filmmaker of the decade in 2010 by Film Comment magazine, Dorsky creates his works to be projected at silent speed, between 17 and 20 frames per second instead of the usual 24 frames per second for sound film.