Question: 1 yuga has how many years?
Answer: According to the Laws of Manu, one of the earliest known texts describing the yugas, the lengths are approximately 4800 years + 3600 years + 2400 years + 1200 years, for a total of 12,000 years for one arc, or 24,000 years to complete the cycle, which is approximately one precession of the equinox.