Help needed dating a Peel Show

[Andy]

Could someone please help me date a John Peel show from 1968.I recently 
found a 25 minute clip of a "Top Gear",i think,on an old reel to reel 
tape but i am not sure if the date i have is correct,during the clip 
John mentions that he went to see Pink Floyd "In The Park" the previous 
day,could this be Hyde Park ! Which would make the show date the 30th 
of June 1968.He mentions that they played "A Saucerful Of Secrets" at 
the gig,so that would tie in with the Hyde Park playlist.
Track listing is as follows:

1. Savoy Brown - Mr. Downchild
2. The Nice - America
3. David Bowie & The Tony Visconti Orchestra - When I'm Five
4. Pink Floyd - Corporal Clegg
5. Traffic - Feeling Alright

Any help would be gratefully received.