The times of Gautama's birth and death are uncertain. Most historians in the early 20th century dated his lifetime as c. 563 BCE to 483 BCE. Within the Eastern Buddhist tradition of China, Vietnam, Korea and Japan, the traditional date for the death of the Buddha was 949 B.C. According to the Ka-tan system of time calculation in the Kalachakra tradition, Buddha is believed to have died about 833 BCE. More recently his death is dated later, between 411 and 400 BCE, while at a symposium on this question held in 1988, the majority of those who presented definite opinions gave dates within 20 years either side of 400 BCE for the Buddha's death. These alternative chronologies, however, have not been accepted by all historians.
