9 July (production)


 * 1965 - "Four Hundred Dawns" was recorded at BBC Television Centre Studio 4. (TCH 6)
 * 2019 - Recording for the Gallifrey box set Time War: Volume Three took place.
 * 2020 - Big Finish announced the two-part audio anthology Shadow of the Daleks 1 and Shadow of the Daleks 2.