Adventure Calendar

The Doctor Who Adventure Calendar — originally launched under the name Advent Calendar in 2006 — is a standard holiday feature of the official BBC Doctor Who website. Like an actual Advent calendar, the Adventure Calendars offered a new "treat" for fans every day from the first of December through to Christmas. They were used to ignite interest in the then-upcoming Christmas special. Among the treats offered were things like games, desktop wallpapers, trailers, music clips and videos, as well as exclusive short stories and novellas. Though most of the treats directly supported the Christmas special, sometimes they were reminders of the series that had been broadcast earlier in that year.

A notable exception to the scheduling was the 2009 instalment, which continued past Christmas until 1 January 2010 in order to promote both chapters of TV: The End of Time.

The calendars persisted on the website long after their particular Christmas had passed. , most elements of the calendars were still view-able in the official site's archives.

Due to licensing, prior to 2010, most video-related items could not be accessed by non-UK visitors on the site. Since 2010, however, most video content has been available internationally.

Since series 9 premiered considerably later than previous series, it didn't end until 5 December 2015 and subsequently days 1-5 of the Adventure Calendar were dedicated to promoting the finale.

December 2018 marked the first year with no Doctor Who Advent(ure) Calendar since 2006.

BBC Cult (2001)
Prior to the return of the show in 2005, Doctor Who featured on the BBC Cult website's 2001 Advent Calendar. The calendar was made up of pieces of a jigsaw which built up each day to reveal an image of Tom Baker riding a bicycle. The show had 8 days dedicated to it -
 * Day 1 Merry Christmas Doctor Who.
 * Day 2 Printable Christmas cards using images from TARDIS Cam.
 * Day 7 A clip from Dead Ringers in which Jon Culshaw, doing his Fourth Doctor impression, prank calls Tom Baker.
 * Day 15 A screensaver featuring images the Second Doctor gurning.
 * Day 17 The debut of the latest TARDIS Cam video.
 * Day 21 Stephen Fry interviewed backstage from the then-upcoming Death Comes to Time.
 * Day 22 Desktop wallpaper of a Cyberman falling over in the snow from The Tenth Planet.
 * Day 25 A flash-based animation featuring carolling Cybermen.