29 May 1928: birth of Frederick Jaeger, who played Jano in The Savages (First Doctor, 1966), Sorenson in Planet of Evil (Fourth Doctor, 1975), and Prof. Marius in The Invisible Enemy (Fourth Doctor, 1977).
29 May 1987: birth of Pearl Mackie, who played Bill Potts in Series 10 of New Who (2017).
ii) broadcast anniversaries
29 May 1965: broadcast of "The Death of Time", second episode of the story we now call The Chase. The Aridians capture the Doctor, Vicki and Barbara, and are about to hand them over to the Daleks when a Mire Beast attacks and they are able to escape.
29 May 1971: broadcast of second episode of The Dæmons. Giant footprints and a heat barrier beset Devil's End; the Doctor and Jo discover a miniaturised spaceship inside the abandoned dig.
29 May 2010: broadcast of Cold Blood. The Doctor manages to negotiate an accommodation between Silurians and humans, but the situation breaks down again, the Silurians return to sleep for another thousand years - and Rory is killed and then erased from history!