so from what I learned, in TDKR which is set in 1986, Bruce is 55, so 1986-55 = 1931. So let's see when his parents were killed 1931+8= 1939... ok this is so meta. anyways Year One is set 30 years before TDKR, so 1986-30= 1956, this means that his 12 years of training started in... 1956-12=...