Q. Dear Rov. My family tradition is to fast on the day of the Yohrzait of parents, and I have done so for my fathers Yohrzait. This year we will commemorating my mothers Yohrzait on Erev Yom Kippur, can I fast on that day?
A. Horav Shlomo Miller’s Shlit’a opinion is that you should eat on Erev Yom Kippur since it is a mitzva to eat on that day and it overrides the other minhag that can be kept for each parent individually.
Rabbi A. Bartfeld as revised by, Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit'a