Why Are There Only 24 Days On An Advent Calendar. For decades, many americans have celebrated the 24 days until christmas with the classic countdown calendars, opening little doors or drawers to reveal a small treat —. For decades, many americans have celebrated the 24 days until christmas with the classic countdown calendars, opening little doors or drawers to reveal a small treat —.

Retaining 24 doors likely relates to the retail principle of meeting established. Advent calendars range between 22 and 28 days,.