Q. Kvod Rabbenu Shlit’a. I usually keep Rabbenu Tam’s Zeman for ending every Shabbos, do I have to wait on the first night of Shavuos till then before we make kiddush?, After all we have guest and children that want and need to eat earlier?
A. Horav Shlomo Miller Shlit"a opinion is that the Minhag of many congregations is to keep between a half an hour or forty five minutes at our latitude and it is used as learning or shiurim time. Of course others keep the complete z’man.
Rabbi A. Bartfeld as revised by Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit'a.