A few quotes from the Rabbi on 'Customs of Israel'
in which he tells of the saintly monthly assembly that meets to pray for all our kin
What the people of Jerusalem, may it be built and established, do during every New Moon Eve service is a great thing. All the Jewish people living in Jerusalem assemble in a great crowd in the afternoon - sages, rabbis, householders, traders and craftsmen – in a grand and regal saintly crowd, and recite the entire service of Psalms in a saintly melody. After the Psalms, they recite the plea for all the kin of Israel in Diaspora, that they be preserved from all evils and afflictions. Afterwards they broken-heartedly recite the Selichot and Takhanun. We place our trust in the LORD our God, who is never distant when we call, for God is great and will never tire from accepting our prayers willingly and compassionately, may it by His will.
Tov MeYerushalaim, in Matok MeDevash, p. 266, Ahavat Shalom Press, Jerusalem, 2000