Reply To: Rabbeinu Tam's Later Shkia and Shabbos (and Mincha)

it is well known that rav yoel tietlebaum used the “rabbeinu tam shkia” to accept shabbos until rav aaron kutler told him not to do so in america.

i have been taught that the “rabbeinu tam shkia” has no halachic basis and cannot be relied upon even beshaas hadchak. accordingly, my rebbeyim have taught me that anyone that uses “rabbeinu tam shkia” to accept shabbos is a mechalel shabbos.