Rosh Chodesh Nissan

I heard from my grandfather [the Baal Shem Tov] that once, in the month of Nissan, he told the famous Maggid of Mezritch, "Right now we have to pray, because the first of Nissan is the New Year for Kings, when all the rulers and officials in the world are appointed. At this moment, some rulers who are not good are being appointed, and we must pray on behalf of Israel.

(Degel Machaneh Ephraim)