Saturday

Saturday was a day of the week.

Cultural references
The Doctor, in his fourth, (PROSE: Shada) tenth (TV: The Stolen Earth) and eleventh incarnations, (TV: The Impossible Astronaut) declared that he liked Saturdays. The Eleventh Doctor called it a "big temporal tipping point when everything is possible." (TV: The Impossible Astronaut)

At least some schools, such as Coal Hill Secondary School, were closed on Saturdays. On every such afternoon, Susan Foreman would use the time to babysit Malcolm until the six-year-old's Aunt Junie arrived on 4 April 1963. (PROSE: Time and Relative)

By the end of their travels together, the Twelfth Doctor, Bill Potts and Nardole regularly took to adventuring in the TARDIS, and answering distress calls, as a "usual Saturday". (TV: World Enough and Time)

Lucie Miller recounted how she didn't feel the cold much when she was out clubbing in Blackpool on a November Saturday night. (AUDIO: Blood of the Daleks)

Audrey Dudman watched a number of naval war films on Saturday afternoons while growing up. (AUDIO: Dark Convoy)

History
On one Saturday in March 1943, the Third Doctor made discrete changes to Neils Bohr's notes to aid the Manhattan Project. (PROSE: Come Friendly Bombs...)

Behind the scenes
Until 2018, Doctor Who had aired regularly on Saturdays on BBC One, since the 2005 revival. The series originally premiered on Saturday as well, and regularly aired on that day of the week from the start. series 11, Doctor Who airings moved to Sundays instead.

Free Comic Book Day, on which Titan Comics released their yearly specials from 2015 to 2019, falls on the first Saturday in May.