From Rabbi Chaim Fogelman as printed in the OK’s Kosher Spirit magazine (spring 2017)
We don’t find any other Yom Tov which has a special name denoting the last day – there’s no Acharon shel Sukkos or Acharon shel Shavuos
Really??
Let’s go through the holidays
Rosh Hashana
chazal we’re quite unequivocal that though it is two days they are considered as one long day so of course there won’t be a separate name for the second day
Yom kippur
Only one day
Succos?
Take your pick
Hoshana rabah
Shimini atzeres / simchas Torah
(Simchas Torah separate day in chutz laaretz but probably only named such because in e y that name exists too)
Chanukah?
Ever hear of ”zos Chanukah?
Purim
Shushan Purim
Pesach
Acharon Shel pesach
Shavuos is only one day.
No name of any other holiday is for a day that exists only in the diaspora
More accurate to say that all ends of holidays have special names
They are just different for each
It’s almost like asking
No other yom tov is called pesach so how come this one is?