The three greatest yartzeits in Eretz Yisrael are R’ Shimon on Lag Be’omer in Miron, The Ohr Hachaim Hakadosh on the 15th of Tamuz on Har Hazeisim, and the Belzer Ruv, Reb Aharon z”l, on the 21st of Av on Har Hamenuchos.
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