Whenever I'm asked if the Jewish holidays are coming early or late this year, I promptly answer that they'll be coming on time. And that's partially true. Rosh Hashanah will always arrive on the first day of the Jewish month of Tishrei just as Hanukkah will always begin on the 25th of Kislev.
Tekiah! Teruah! Shevarim! Tekiah Gedolah!
In the traditional liturgy, the special character of each holiday is particularly conveyed by the piyyutim (hymns, liturgical poems) that are recited or chanted on that day. Most of these piyyutim have been omitted in Reform liturgies since the nineteenth century, out of a sense that their Hebrew diction is too arcane and their theology too medieval. Yet, some of these poems have routinely been retained in Reform High Holy Day prayer books, particularly for Yom Kippur.