↑The chronicle Mon Yazawin (Slapat 1922: 55) says he died at age 27 (28th year) in 1445 after having reigned for 3 years, meaning he was born c. 1417/18. But the chronicle also says he was younger than his predecessor Binnya Waru by two years. Since Binnya Waru was born in 1418/19 per Hmannan Yazawin, Binnya Kyan was probably born around 1420/21.
↑Mon Yazawin (Slapat Rajawan) provides wildly divergent and inconsistent dates for the early Hanthawaddy history, including the reign of this king. The birth-death and regnal dates use the regnal years given in the Slapat chronicle with 888 ME (1526/27), the death year of King Binnya Ran II, which is in agreement with standard Burmese chronicles, as the anchor reference point.
↑(Maha Vol. 2 2006: 81): 813 ME = 1451/52. But since his successor ruled for seven months in the same year, he must have died before September 1451.
↑(Hmannan Vol. 2 2003: 91): 814 ME = 1452/53. But since his successor ruled for seven months in the same year, he must have died before September 1452.