Table topper's Bognor Regis Town host third placed Leiston and second placed Havant and Waterlooville (who drew 0-0 at Needham Market on Saturday) host Harrow Borough who beat them 2-1 at Earlsmead only a few weeks ago.
The other game is Mertsham (16th) hosting Worthing (14th) - both clubs are nearly safe but need a few more points to guarantee this.
There is more news from the fight to avoid relegation where, following Saturday's 2-1 away defeat at Burgess Hill Town, Kingstonian have parted company with their management team. Manager Tommy Williams and his assistant Graham Harper have both left the club with no announcement on a replacement yet.
The K's miserable form has seem them sink into the drop zone with the club saying the next six games are their most important in the last decade. Their next game is quite simply a MASSIVE game which sees 21st play 20th (Leatherhead) at Kingsmeadow - defeat for either side would be a real blow to their chances of staying up!