Junshaku is promoting one of the government officials of the sixth rank belonging to the divisions of Shikibu, Minbu (popular affairs), Geki (Secretary of the Grand Council of State), or Shiki to Jugoi (Junior Fifth Rank), in accordance with tenure (the number of years in service), at Jimoku (ceremony for appointing officials) performed by Daijokan (Grand Council of State) on every New Year's day.
巡爵とは、太政官において式部・民部・外記・史記など特定の部署に属する六位の官人の中から、1人を年労即ち在職年数に応じて毎月正月の除目において従五位に叙爵することをいう。