First Week Of Advent 2025. It begins on the sunday closest to november 30 (st. Advent 2025 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).

The year beginning with advent 2025 is year c. This year, advent will begin on sunday, december 1st, and end on tuesday, december 24th.