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Most or all Jewish holidays have an extra day in the Diaspora, to accomodate for sfeike deyoma, so why do we not count two numbers each day of sfira?

marked as duplicate by magicker72, Double AA Apr 12 '18 at 22:32

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Rabbi Yosef Dov Soloveichik zt'l is quoted as saying that "today is 12 ... or 13" is not considered counting!

Others suggest that sfeika deyoma as we know it today was pretty much only accepted vis-a-vis observing a day as yomtov.

  • Who are these "others"? And what is "pretty much"? – Double AA Apr 12 '18 at 22:32

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