User blog comment:ChishioKunrin/RWBY 3 Livestream points/@comment-1430834-20160213062145/@comment-4010415-20160213065506

Read my edit. I thought you meant years in real life, and then it suddenly occurred to me that you might be talking about in-universe, though we don't know what other times he might have used his Semblance between the Black Trailer and Heroes and Monsters.