In April 2011, the BBC began to reshow "Top of the Pops" on Thursday nights on BBC Four beginning with the equivalent show from 35 years earlier in a 7:30 pm–8:00 pm slot approximating to the time the programme was traditionally shown. The first programme shown, 1April 1976, was chosen because it was from approximately this episode onwards that most editions remain in the BBC archive. The repeat programmes come in two versions; the first is edited down to fit in the 30-minute 7:30 slot, the second is shown normally twice overnight in the following weekend, and is usually complete. However both the short and longer editions can be edited for a number of reasons. Potentially offensive content to modern audiences is cut (for example the Barron Knights' in-studio performance of "Food For Thought" on the edition of 13 December 1979 including a segment parodying Chinese takeaways using mannerisms that may now be viewed as offensive), and cinematic film footage can be truncated, replaced or removed entirely due to the costs to the BBC of reshowing such footage. The BBC also makes the repeats available on BBC iPlayer. The repeats are continuing as of March 2021 with episodes from 1990.