Duchening on Yom Kippur which is also Shabbat

Hi,

Kohanim should perform Birchat Kohanim on Yom Tov and Yom Kippur even if those occur on Shabbat.

The Magen Avraham (128:70) does offer two explanations to justify the practice of refraining from Birchat Kohanim on Yom Tov which is also Shabbat - 1) Concern that people might say the supplicative paragraphs inserted in Birchat Kohanim, which should not be recited on Shabbat, and 2) Concern that the kohanim may have been with their wives the night before, and will not have gone to mikvah in the interim. However, neither point is irrelevant for Yom Kippur, when one may recite those paragraphs and when procreation is prohibited.

(Rav Moshe Feinstein, Igrot Moshe Orach Chaim 3:18)

Have a great day,
Mordechai