Q. There is a couple transitioning to live in Israel. Next year they are there a month straight, the next year six months, coming back to visit the rest of the time. At what point are they Halachically considered residents of Eretz Yisrael particularly in regards to keeping one day of the Shelosh Regallim.
A. Horav Shlomo Miller’s Shlit’a opinion is that one is considered in Halacha a resident of Eretz Yisroel for the purpose of keeping only one day Yom Tov, when he stays six consecutive months a year in the land, and is planning to continue to do so in the future.
Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit’a