The simchah of Chodesh Adar (Mishenichnas Adar marbim besimchah) begins from Shabbos Mevarchim.
Tehillim
Early in the morning we gather in shul to recite the entire Tehillim with a minyan. Following Tehillim, a maamar (that can be understood by everyone) should be studied for around an hour, followed by davening.
For more on saying Tehillim on Shabbos Mevarchim, see below, “Hosafos.”
Blessing the New Month
It is proper to know when the molad will be before blessing the new month.
This month, the molad will be on Thursday evening, at 7:02 p.m. and 0 chalakim.
The chazzan stands, holding a Sefer Torah, and leads the congregation with Mi shebeirach. It is customary for the congregants to stand as well.
Rosh Chodesh Adar will be on Friday and Shabbos. We don’t say Av Harachamim.
Farbrengens
Shabbos Mevarchim is a day to farbreng, ideally in shul.
For more on Shabbos Mevarchim farbrengens, see below, “Hosafos.”
On Erev Rosh Chodesh (known as Yom Kippur Katan), give extra tzedakah and increase in davening and learning.
At Minchah we don’t say Tachanun.
Say Yaaleh Viyavo during Maariv tonight. See below, “Hosafos,” for the laws that apply if you forgot to say Yaaleh Viyavo.
Make sure to study a parshah of Chumash with Rashi every day, to say Tehillim every day, and to complete the Tehillim on Shabbos Mevarchim. It is crucial for you, your children, and your grandchildren.
-Hayom Yom, 25 Shevat
