Shulchan Aruch, Orach Chayim 684:3 says (in my own translation): If rosh chodesh Teves comes out on Shabas, we remove three Torah scrolls, and six people read in the weekly section and one in that ...
If a congregation forgot to say birkas hachodesh on the Shabas before rosh chodesh, should it say it another time? When? (Does it, perhaps, depend on what day(s) of the week rosh chodesh is?) Note: ...