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In the times of Kiddush HaChodesh Shavuos which is 50 days after the start of Sefiras HaOmer could come out either 5, 6, or 7 Sivan depending on how many days Nisan and Iyar had. There is still one Yom Tov that can come out on 2 different days even with the current calendar. Which Yom Tov is that?

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closed as not constructive by Isaac Moses Jun 17 '11 at 21:45

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up vote 5 down vote accepted

In many Hassidic communities, the final day of Chanukah has particular significance as "zos chanukah." This can be the 2nd or 3rd of Tevet, as Kislev is a month of variable length.

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You got it!!!!! – Gershon Gold Oct 5 '10 at 19:35
Also Mazal Tov on the 10K – Gershon Gold Oct 5 '10 at 19:36

Shushan Purim? 15th Adar on a regular year, 16th if the 15th is Shabbos. (Well sortof -- Purim Meshulash.)

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Good answer, however not the one I am looking for. – Gershon Gold Oct 5 '10 at 19:20

Yom Ha'atzmaut can be observed on the 3rd, 4th, 5th, or 6th of Iyyar.

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Good answer if you celerate it. However I am looking for something else. – Gershon Gold Oct 5 '10 at 19:26
I'll bet more people celebrate Y"H than "Zos Chanuka" (as such). :) – Isaac Moses Oct 5 '10 at 19:36
That might be tha case. However Zos Chanuka is what I was looking for:) – Gershon Gold Oct 5 '10 at 19:41

Any fast d'rabanan, except 10 Teves, can be moved, but those, of course, don't qualify as the sought "Yom Tov".

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Yes - I am looking for a Yom Tov. – Gershon Gold Oct 5 '10 at 19:33
Even 10 Tevet can be moved. We don't paskin like the avudraham who says your shittah. See Beit Yosef OC 550 – Double AA Jul 27 '11 at 6:00
@DoubleAA, ask the oldest person you know whether he's ever seen 10 Teves moved. (The question specifically restricts its scope to "the current calendar", without kidush hachodesh.) – msh210 Jan 29 '12 at 19:10

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