All others end on Erev Yom Kippur or on Yom Kippur
*# 2 & # 3 might be the same (not sure if #2 said on Shabbos) In Siddur R. Amram Gaon, there are Selichos for Rosh Hashana and Friday night (Shabbos).”
A. The tradition of Ashkenazim is this year (2025) to begin reciting Selichos on the night after this coming Shabbos Parshas Ki Savo.
One should follow the traditions of his family or the congregation one attends.