Raymond Rowland, 60, was due to stand trial at Sheffield Crown Court on Monday, but it did not go ahead.
A new trial date has now been fixed for October 14 this year.
Rowland has been charged with 15 counts of indecent assault; three counts of buggery; one count of attempted rape and one count of indecency with a child.
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He has entered not guilty pleas to all 20 offences.
The majority of offences are alleged to have taken place in Rotherham during 1970s and 1980s.
There are multiple alleged victims of both sexes, the youngest of which was five-years-old at the time.
None of the alleged victims can be named for legal reasons.
The Recorder of Sheffield, Judge Jeremy Richardson QC, released Rowland, of West Street Pontefract, on bail until his next court appearance on June 5.