Rogation Days

Japanese: Rogation Days（英語表記）RogationDays

…The Church could not prohibit these pagan beliefs and rites in order to spread Christianity among the people. The Church established the three days of Monday, Tuesday, and Wednesday five weeks after Easter, close to May Day, as a Christian holiday called Rogation Days, a day to pray to the Lord for forgiveness of sins and the fruits of the earth. Later, some regions began to celebrate Pentecost, 50 days after Easter, by erecting a May tree, and May Day gradually became incorporated into the umbrella of the Church. …

From [Ascension]

… The 40th day after Easter (which falls on a Thursday) is called Ascension Day, or Holy Thursday, and the Roman Catholic Church celebrates the ascension of Christ. The three days before Ascension Day are called Rogation Days. The ascension of the Virgin Mary is called the Assumption of the Virgin, and its feast day is August 15. …

From the Agricultural Calendar

… [Tsugitaka Sato]. . …

*Some of the terminology that refers to "Rogation Days" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…教会はキリスト教を民衆の間に広めるために，異教時代のこうした信仰･祭祀を禁止することはできなかった。教会は五月祭に近い復活祭5週間後の月･火･水の3日間を祈願節Rogation Daysというキリスト教の祝日と定め，罪の赦しと大地の実りを主に祈る日とした。のちには，復活祭50日後の聖霊降臨祭(ペンテコステ)に〈五月の樹〉を立てて祝う地方も現れ，五月祭はしだいに教会のかさの中にとりこまれていった。…

【昇天】より

…　なお，復活祭後40日目(木曜日にあたる)を昇天日Ascension Day,Holy Thursdayと呼び，ローマ･カトリック教会ではキリストの昇天を祝う。また昇天日前の3日間を昇天前祈禱日Rogation Daysという。聖母マリアの昇天は〈聖母被昇天Assumption of the Virgin〉と呼び，その祝日は8月15日。…