Published online by Cambridge University Press: 12 April 2016
The Muslim Calendar spread into China in 1385 where it was immediately translated into Chinese by the astronomer Yuan Tong and came into use. In 1477, it was further translated by the astronomer Bei Lin and compiled into the “Qi Zheng Tui Bu”, a work more or less the same in substance with the Muslim Calendar recorded in the “Ming Shi Li Zhi”, both being works of the same source. They left for us the valuable data of the results of research of ancient Arabian astronomers.
On different occasions in the Muslim Calendar, values different with one another are used for the same kind of data. In that case, which of them are used for them are accurate values surveyed and calculated by people who originally worked out the Muslim Calendar? And how are these values calculated from data now available?