Mori V’rabi Hagaon R. Y.M. Hirschman shlita, told me the Chasam Sofer
writes Befeirush in the Hagahos on O. Ch. 551, also in the Drashos 2: p331.
“After 9th Av a new month starts called Menachem.”
I leafed through the seven volumes of Shu”t Ch. S. (1246 Teshuvos)
and found, there are aproximately 150 Teshuvous written by the Chasam Sofer
in the month of Av. All of them follow the rule of the TchebinerRav zt”l,
The ones dated Before 9th Av are dated as Av. The ones after 9th Av are dated as
However there are two days, the 13th and 15th of Av where the Ch. S. dates them
Av, even though they are after 9th Av.
It is possible the 15th of Av being it is mentioned in the Mishna (end m. Ta’anis)
as Chamisha Asar B’av, he didn’t want to change the Loshon of the Mishna*.
On the 13th of Av I have no explanation.
15th of Av 13th of Av
O.Ch. 60 O.Ch. 115
Y.D. 129 O.Ch. 158
E.H. 2: 72 Y.D. 43
Chelek 6 41
Chelek 7 18
*There is one Teshuva (E.H. 2 : 125) on the 15th he dated as Menachem.