What is the earliest one can Daven Maariv on Motzei Shabbos when it is the first night of Yom Tov such as Pesach this year?
Tzeis Shabbos occurs at Tzeis Kochavim Ketanim, and the Shiur of Tosfos Shabbos is several minutes later (see Seder Hachnasas Shabbos. Cf. Alter Rebbe's Shulchon Aruch (OC 293:1) who…