When Does Advent Begin 2024. The first sunday of advent is also the beginning of the new liturgical year when we transition into a new liturgical cycle. First sunday of advent 2021:.

Advent 2024 begins on sunday, december 1st, starting the celebration season for the birth of jesus christ with the advent season ending on the first mass of christmas (vigil mass) on christmas eve. The first sunday of advent is december 1, 2024.