i) broadcast anniversaries

7 June 1969: broadcast of eighth episode of The War Games. The War Chief offers a deal to the Doctor, who allows the War Lords to capture the rebels.

7 June 2008: broadcast of Forest of the Dead. The Doctor defeats the Vashta Nerada, but at the cost of the lives of River Song and her team, who however are preserved within the Library.

ii) date specified in canon

7 June 1941: setting of earlier parts of Lost in Time (SJA, 2010).