As a principle the conference was held every day excluding five holidays a month (days 6, 12, 18, and the last day of each month), however, it was reduced to several times a month in the middle Heian period, and was replaced by Jin no sadame (ancient cabinet council).
原則として月5日の休日（毎月6・12・18・24・晦日）を除いて毎日開催されることになっていたが、平安時代中期には月数回にまで減少し、陣定などに代わった。