- You may be looking for the Doctor Who "Adventure Calendar".
Advent calendars were calendars used to count down the days until Christmas. They were originated by Germans—the Eighth Doctor was unsure whether they were Lutherans or a mother seeking to give her children sweets in an innovative way—in the mid-1800s. Each calendar contained numbered windows which opened, AUDIO: Twenty-Four Doors in December) sometimes sliding, (PROSE: The Ship of Painted Shadows) to reveal a surprise. (AUDIO: Twenty-Four Doors in December)
An issue of Doctor Who Adventures came with an advent calendar that had a monster behind every door. (PROSE: Hello There!)
To alleviate his boredom during a stint at 107 Baker Street, the Doctor built an Advent calendar based on the house's exterior. Upon the arrival at the house of the Eighth Doctor, Charlotte Pollard, and Lady Audacity Montague on 1 December in either 2003 or 2004, the Doctor showed his calendar to Audacity, inviting her to open the first door. He was fond enough of his calendar to proclaim that no Baker Street Christmas was complete without it. (AUDIO: Twenty-Four Doors in December)
Behind the scenes[]
Since 2006, the Doctor Who team has done an "Advent(ure) Calendar" in the days leading up to the Christmas special. Generally beginning on 1 December, and ending on Christmas, when the special airs, each day of the Adventure Calendar includes a treat for fans, related to the series.
Issues of Doctor Who Adventures released just before December sometimes included a pullout advent calendar as a free gift.
AUDIO: Twenty-Four Doors in December is structured like an Advent calendar, with each scene taking place during a different day in December leading up to Christmas.