Wishing everyone a gut yom tov,
Please remove me from all days, I will only be able to do sporadically for the time being.
This comes from the Gedolei Yisroel in the name of the Ba’al Yismach Moshe
Why do we sing l’shana haba specifically after Yom Kippor and during the seder, exclusively?
There is a famous machlokes in the gemarra (Rosh HaShana) when will the redemption take place? R’ Elazar says in Tishrei, and R’ Yehoshua says Nissan.
Rabbenu Tam says that no machlokes is actually taking place. The Yidden’s private geula will take place in Nissan and the general international geula will occur in Tishrei.
Therefore its specifically after Neila and during the seder where we sing l’shana Haba B’Yerushalayim