Question:
For someone who is Ashkenazi and usually fasts on one’s father’s yartzheit, if it comes out on Shabbos this year, do we not fast at all or do we need to make it up another day? If yes, which day?
Answer:
The Ashkenazi minhag is not to fast on Shabbos and that it doesn’t have to be made up. The Sefardi minhag though is to make it up the next day. According to everyone the candle is lit before Shabbos and Kaddish etc. are said regularly.
Best Wishes
Sources:
Shulchan Aruch O:CH 568-9