Tuesday, September 25, 2018

halacha - Can a public fast day be used for a Yahrtzeit fast?


Some people have a minhag to fast on a yahrtzeit (see Shulchan Aruch OC 567,7-9). If the day of the yahrtzeit occurs on a public fast day such as 17 Tamuz, can the fasting done then count for the yahrtzeit fasting or does a separate day need to be done for the yahrtzeit?





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periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions

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