Newcastle were hoping to attract a 50,000 gate for the final home game before Christmas, against Middlesbrough, but fell 356 short.
Harper is hoping that they manage it on Monday.
Steve Harper: “I’m sure we’ll have a huge crowd on Monday night roaring us on.
“It would be nice to get up to capacity at St James’ Park. We’ve been up in the mid-forties a lot, but to get over 50,000 to back us would be brilliant."
EASTER MONDAY FIXTURES
Barnsley v Peterborough 15.00
Blackpool v Doncaster 15.00
C.Palace v Preston NE 15.00
Derby v Ipswich 15.00
Leicester v QPR 15.00
Newcastle v Sheff Utd 19.45
Nottm Forest v Cardiff City 17.15
Plymouth v Middlesbrough 15.00
Reading v Coventry 15.00
Sheff Weds v Bristol City 15.00
Swansea City v Scunthorpe 15.00
Watford v West Brom 15.00
NEWCASTLE UNITED FIXTURES
Monday 05th April 2010
Newcastle v Sheff Utd 19.45
Saturday 10th April 2010
Newcastle v Blackpool 15.00
Tuesday 13th April 2010
Reading v Newcastle 20.00
Monday 19th April 2010
Plymouth v Newcastle 19.45
Saturday 24th April 2010
Newcastle v Ipswich 15.00
Sunday 02nd May 2010
QPR v Newcastle 13.00