The following are some key halachot (Jewish laws) when Tisha B’Av falls on Shabbat and is pushed off to Sunday:
Bring your non-leather shoes to be worn on Tisha B’Av before Shabbat and leave them in the synagogue so as not to prepare from Shabbat to weekday.
It is customary for Ashkenazim to refrain from marital relations on Shabbat unless it’s mikva night. Sephardim permit.
It is permitted to eat Seudah Shlishit until sunset, including wine and meat.
With nightfall, one should say – Baruch HaMavdil bein Kodesh l’chol and switch your shoes.
We light a Havdalah candle Saturday night and bless on it.
Following the fast on Sunday night, Havdalah is recited on a cup of wine (no candle or spices).
Kiddush Levana is recited.
With the end of the fast, it is permitted to shave, bathe, get a haricut, eat meat and drink wine.