Are there any dates in the calendar other than the 3 weeks and Sefira when weddings should not be scheduled?
Yes. Shabbos & Yom Tov, including Chol Hamo’ed. Erev Yom Tov. Purim. Aseres Yemei Teshuvah.
And according to many opinions – on Fast Days.
In the later years, the Rebbe made it clear that weddings can take place even on dates when the custom was to avoid in the past (such as in the second half of most months), as explained on pages 14-15 of the Wedding Guide.
Nonetheless, it is important to note that it is obvious that this is only true when the wedding will take place earlier. In other words: in the instance when one can choose between making a wedding in the beginning or end of a certain month, for example, one should not schedule for the end with the allegation that it is according to the Rebbe’s later instructions.
Generally, best to avoid weddings on Sundays, as it’s the practice of non-Jews.
Days that customarily used to be avoided, when possible, are:
The second half of all months except Kislev, Adar and Elul. The entire Cheshvan and Teves. (In some places it’s mentioned that Adar is preferable over Shevat. In some places it’s mentioned to avoid all of Menachem Av. Other sources indicate otherwise). Even lag B’omer and Shloshes Yemei Hagbalah were avoided when possible.
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