There was a time when the KOTOKUI-reki Calendar was utilized instead of the one created by the Onmyoryo of Kyoto since the Onmyoryo calendar fell out of favor as the political situation of the time grew unsteady.
政情不安で機能停止した京都の陰陽寮に代わって幸徳井家による独自の暦（幸徳井暦）が編纂されたこともあった。