Whatever Happened to Sarah Jane? (1) - S1-E8
Corrected entry: Maria arrives by the beach on the 13th July 1964 after being transported there by the Graske. The date is mentioned several times in the episode. A couple walk by with "You Really Got Me" by The Kinks playing on the radio. The song wasn't released until the 4th August. (00:26:05)
The Wedding of Sarah Jane Smith (1) - S3-E6
Corrected entry: Both Sarah Jane and The Doctor realise that the same second is repeating itself around them after seeing a TV clip of some racehorses. But both clips are identical, even though she is supposed to be a second behind him.
Correction: Both clips are slightly different. In the Doctor's one, the horse has just taken off in the clip, and in Sarah's, the horse lands.
Correction: Songs are often played on the radio before they're released as singles, in order to publicise it and encourage people to buy it en masse when it's released, so as to bump it up the charts.