1月21日（制作）

Sonic screwdrivers can't create pages instantly.

This article about a day of the year is currently under construction. It's likely to be a bit messy.

1月21日

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错误：时间无效。

On 1月21日, the following important behind-the-scenes events were known to have occurred:

1966 - "War of God" was recorded at Riverside Studios 1. (TCH 7)
1967 - Episode three of The Underwater Menace was recorded at Riverside Studios 1. (TCH 9)
2010 - The Big Finish audio story The Time Vampire took place at the Moat Studios.
2013 - The Big Finish audio story Persuasion took place at the Moat Studios.
2014 - The third series of Big Finish's audio series Counter-Measures was recorded at the Moat Studios.
2020 - Big Finish's audio anthology The Lost Resort and Other Stories was recorded at the Moat Studios.
2021 - The BBC announced the Blu-ray box set The Collection: Season 24.