1921

1921 carries the identity Xin-You in the Chinese sexagenary calendar, the Metal Rooster year, its start set by which lunar new year falls inside this Gregorian year rather than by the Gregorian date itself. The system runs two cycles at once: ten heavenly stems, each stem carrying one of five elements across a paired Yang year and Yin year, and twelve earthly branches, each branch carrying one of the familiar zodiac animals. The two cycles advance together, one stem and one branch each year, and because ten and twelve share a lowest common multiple of sixty, the full pairing of stem, branch and element returns only once every sixty years rather than every twelve. This particular pairing, Xin-You, last named a year in 1861 and will not do so again until 1981.

The sixty term cycle is older than its zodiac branches alone: it was used to count days as well as years in the earliest Chinese calendars, and its year form still sets the date of the Chinese, Vietnamese and Korean lunar new year, underlies Bazi ("four pillars") fortune telling, which reads a person's stem and branch at birth, month, day and hour together, and paces the lunar timing of some ancestor veneration and temple rites that do not follow the solar calendar.

In Chinese folk astrology a year is read first through its animal and then adjusted by its element. The rooster's crow, marking the boundary between night and dawn, gives it a place in Chinese folk religion as a ward against darkness, painted on doors and gates beside the tiger. Rooster years are read as industrious and exacting. The element modifies that base reading: in the five phase (Wu Xing) system Metal governs the west, the color white, the season of autumn and the virtue of righteousness. A Metal year is traditionally read as a season for consolidation and firm decision; Metal is held to feed Water and to be held in check by Fire.

Put together, 1921 reads in the folk tradition as a Rooster year with a Metal cast, Metal's firmness tempering the animal's own temperament rather than replacing it. The same twelve animal cycle, adapted with local variation, also orders the traditional calendars of Vietnam, where the rabbit is usually read as a cat, and of Japan, where the pig is usually read as a boar; the underlying stem and element layer that gives 1921 its Metal cast specifically is a Chinese addition that these neighboring traditions do not all keep in the same form. Older reckonings also put the same twelve branches to work outside the calendar of years: the same order once named the twelve double hours of the day and the twelve compass points, so Rooster marks a direction and a stretch of the clock in those older systems as well as this year.