The New Year on the Hebrew calendar is coming up on the 1st of Tishrei, 5778, which on the Gregorian calendar begins at sunset on Wednesday, September 20, 2017.
In Hebrew, I say: כתיבה וחתימה טובה with the transliteration of “Ketivah v’chatima tovah” meaning in English “A good inscription and sealing (in the Book of Life).”
In Yiddish, I say: א גוט געבענטשט יאהר with the transliteration of “A gut gebentsht yohr” meaning in English “A good and blessed year.”
For an interesting read, I suggest you go over to the following article by clicking on its title containing an embedded link that will open the article in a new browser:
Rosh Hashanah (& The Jewish New Year) Approaches — Here’s What You Need To Know