Rama Orach Chaim 582:9 says in the name of the Tur that the Minhag is to wish one another on the evening of Rosh HaShana L'Shana Tova Tikosaiv. Is there a source that says that people should answer ...
Is there anything wrong with blowing a Shofar at night: on Rosh HaShanah for the Mitzvah (or just because one missed it and wants to hear it, eg., the person was ill) on Rosh HaShanah for practice ...
Why does the chazzan for slichot a week before rosh hashana wear a talis? Isn't it clearly night time?