I don't think YE has existed (Since it has existed 37 years) long enough for me to use their years. Their civilization is at least a couple thousand years old. They probably aren't as old as ours is (Earth). Without hundreds of nations squabbling, the Raiken could progress a bit faster. After all, if you asked how many countries existed in the early days, I'd probably say five. One for each elder clan.
However I did add timestamps. RAC or Raiconian Alliance Cycle have been added beneath every header, starting at the creation of the Alliance. (They did not record time prior) Each RAC is about the same length as an earth year. They count their moons orbits, not their planetary orbit. (Since their planet doesn't rotate, it's the easiest thing to count.) The present year is 450 RAC. (Which would be YE 37)