Q. Our family gathered together for Sukkot on these most unusual times. We are planning to do the Hakamath Hamatzevah for our father and grandfather, while we are all together. Since many are departing immediately after Yom Tov, can we do the matzevah on Issru Chag? Any recommendations?
A. Nitei Gavriel (Shavuos 37: 5), Tzion Lanefesh Chaya (end of n. 10), Davar Beito (5756 p. 36) and others mention that the minhag is not to perform Hakomas Hamatzeiva in days when no tachanun and hespedim are said including Issru Chag. They relate that the matzeiva of the Stretner Rebbe zt’l was dedicated on Issru Chag Shavuos, but no hespedim were said. (See also Mekadesh Yisroel – Shavuos 109, regarding Hakomas Matzeiva on the seven days after Shavuos).
Horav Shlomo Miller’s Shlit’a opinion is that in need the dedication can be done, but hespedim should be avoided.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller and Horav Aharon Miller Shlit’a