Maariv: Yom Tov concludes at 8:22 p.m., N.Y.C. E.D.T., the usual weekday Maariv Tefilla, with the inclusion of Ata Chonantanu,Vi’Yehi Noam v’Ata Kadosh, followed by Sefiras HaOmer. [After Alenu, or for some before, we say V’yiten Lecha.] We make Havdala at home. (Some are accustomed to recite Havdala in shul as well.)
Sunday morning: Isru Chag – Shacharis as usual, but we do not say Tachanun until the end of Nissan.
The following chapters of Tehillim are being recited by many congregations and Yeshivos for our brothers and sisters in Eretz Yisrael: Chapter 83, 130, 142. –Y.K.