12月20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.

12月20日

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错误：时间无效。

On 12月20日, the following important behind-the-scenes events were known to have occurred:

1963 - "The Expedition" was recorded at Lime Grove Studios. (INFO: "The Expedition")
1967 - Pre-filming for The Web of Fear began at Ealing Studios Stage 3. Location filming also took place on the Ealing Studios backlot. (TCH 11)
1984 - Studio filming for Timelash took place. (REF: Doctor Who The Handbook: The Sixth Doctor)
2010 - Recording for Heroes of Sontar took place at The Moat Studios.
2012 - The seventh series of Big Finish's audio series Jago & Litefoot was recorded at the Moat Studios.
2018 - Big Finish announced the Torchwood audio box set The Sins of Captain John.
2019 - Recording for Wicked Sisters took place at the Moat Studios.
2019 - Big Finish announced the Eighth Doctor audio series Stranded, including the casting of Rebecca Root as new companion Tania Bell and Tom Price reprising the role of Torchwood semi-regular Andy Davidson, this time as a companion.