Question: [Sunday, 14th Tishreiy, 5783]
I am visiting Israel with my wife for Sukkos. Must I keep two days of Yom Tov?
You should keep one day.
Sources: See Admur 496:11 for a dispute regarding if he should keep the second day if he plans to return to Diaspora, and the first stam opinion of Admur holds that he is to keep one day, and this seems to be Admur’s main opinion. This is also consistent with the ruling of Admur in Basra 1:8 and Shaar Hakolel 1:2 that one should always keep like the area he is in. Furthermore, perhaps even the dissenting opening here agrees that he should keep only one day being that he came with his wife, as rules Admur in 496:10. This was also the ruling of the Rebbe Rashab to Rav S.Z. Havlin in his letter to him, and was likewise the ruling of the Rebbe in Igros Kodesh letter 6,193; So also rules: M”A 496:7 in name of Radbaz; Elya Raba 496:6M”B 496:13; . Other opinions: See Admur ibid and Poskim in Piskeiy Teshuvos 496:24 and Nitei Gavriel Yom Tov 57:4, including Aruch Hashulchan 496:5; Igros Moshe 3:74