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Year

A year (年; nián) is based upon the time of one revolution of Earth around the Sun, rounded to whole days. Traditionally, the year is measured from the first day of spring (lunisolar year) or the winter solstice (solar year). A year is astronomically about 365 + 31 ⁄ 128 days. This includes the calendar (日曆; rìlì) year, when it is authoritatively determined on which day one year ends and another begins. The year usually begins on the new moon closest to Lichun, the first day of spring. This is typically the second and sometimes third new moon after the winter solstice. A calendar year is 353–355 or 383–385 days long. Also includes Zodiac, 1 ⁄ 12 year, or 30° on the ecliptic. A zodiacal year is about 30 + 7 ⁄ 16 days.