Yom Kippur
The Yom Kippur prayer service includes several special parts. One of them is the number of prayer services. A regular day has three prayer services (Ma'ariv, the evening prayer; Shacharit, the morning prayer; and Mincha, the afternoon prayer). A Shabbat or major Jewish holiday has four prayer services (these three plus Musaf, the additional prayer). Yom Kippur has a fifth prayer service: Ne'ilah, the closing prayer. All five prayer services include a public confession of sins (Vidui). The additional (Musaf) prayer includes a prayer dedicated to the special Yom Kippur avodah (service) of the High Priest in the Temple in Jerusalem.