Today’s Yahrtzeits – 25 Teves

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Rav Yechiel Michel Tukatchinsky, mashgiach of Slabodka in Bnai Brak, and founder of YeshivasMekor Chaim in Yerushalayim. In 1925, he published a sefer called Tekufas Hachamoh Uvirchosoh, in preparation for the bracha made when the sun returns to the point at which it began upon Creation. He wrote a sefer called Bein Hashmoshos, published in 1929, which dealt with the International Date Line. In 1941, he changed his mind altogether, as documented in his sefer, Hayomam Bekadur Haaretz.

{Yahrtzeits licensed to Matzav.com by Manny Saltiel and Anshe.org/Matzav.com Newscenter}

1 COMMENT

  1. His sefer Bein hashemashot was the first sefer to combine deep knowledge of halakha and science wrt to define the end of shabbos precisely. His proposed method of calculation, a depression angle of 8.5 degrees, is used universally. He wrote Ir Hakodesh and the definitive sefer on aveilut, gesher hachaim, and a defense of the heter mechirah. He was married to the granddaughter of R. Isroel Salant. He famously won an argument with R. Yosef chaim Sonnenfeld, when he was a young man 110 years ago and his method of calculating the shittah of the MA’s zemanin is still used today in yerushalayim.

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