West Ham United's npower Championship visit to Barnsley will now kick-off at 5.15pm on Friday 6 April 2012.
The fixture at Oakwell has been selected for live television coverage by the BBC and will now be played on Good Friday.
The Hammers beat the Tykes 1-0 at the Boleyn Ground in the reverse league fixture on 17 December, with Papa Bouba Diop heading in the all-important goal.
West Ham have won their previous five matches against Barnsley and tasted victory on their most-recent trip to Oakwell on 9 August 1997, when John Hartson and Frank Lampard scored in a 2-1 Premier League victory.