'''Shemini Atzeret''' ({{Script/Hebrew|שְׁמִינִי עֲצֶרֶת}}—"Eighth [day of] Assembly"; [[IsraelHebrew language|Israeli<small>Hebrew</small>]] pronounced[ʃemiːˈniː ''shemini atzèret''; [[Ashkenazicʔaˈtseʁet]] pronounced ''shmini-atsères'') is a [[Jewish holidays|Jewish holiday]]. It is celebrated on the 22nd day of the [[Hebrew calendar|Hebrew month]] of [[Tishrei]] in the [[Land of Israel]],<ref name=topdate /> and on the 22nd and 23rd outside the Land, usually coinciding with late September or early October. It directly follows the Jewish festival of [[Sukkot]] which is celebrated for ''seven'' days, and thus Shemini Atzeret is literally the ''eighth'' day. It is a separate—yet connected—holy day devoted to the spiritual aspects of the festival of Sukkot. Part of its duality as a holy day is that it is simultaneously considered to be both connected to Sukkot and also a separate festival in its own right.{{sfn|Bank|Wiggins|2012|p=139}}
Outside the Land of Israel, this is further complicated by the [[Yom tov sheni shel galuyot|additional day]] added to all Biblical holidays except [[Rosh Hashanah]] and [[Yom Kippur]].<ref name="Egg">Talmud, ''[[Beitza]]'' 4b.</ref> The first day of Shemini Atzeret therefore coincides with the eighth day of Sukkot outside the Land of Israel, leading to sometimes involved analysis as to which practices of each holiday are to apply.