[Mesorah] RH a chag?

[SBA]

msh210 at math.wustl.edu writes:
My Artscroll Rosh Hashana machzor, on the page with "l'shana tova 
tikasev", says that after the first night it's traditional to say instead 
"gut yom tov" or "chag sameach".  Since when is RH a chag?  I thought that 
referred only to the shalosh r'galim.

Michael Hamm
>>>>>>
So?  You don't say Good Yom Tov on Rosh Hashana?
--Toby Katz
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I presume Artscroll was trying to help non-Yiddish speakers - especially
Israelis - with some type of greeting. IIRC from earlier discussions
In Israel even Chanuka is referred to as a Chag.

SBA