10 May

10 May was a date.
The Fifth Doctor predicted that Folly Prison was going to explode on 10 May the year after his unsuccessful parole hearing. (AUDIO: Doing Time)
10 May 2020 was a Sunday. On that day, Petronella Osgood had a video chat with Zygon Osgood. (WC: The Zygon Isolation)
10 May 2470 was VEE Day (Victory on Epsilon Eridani), marking the victory of Epsilon Eridanians against human occupiers. (PROSE: Time Traveller's Diary)