See post above for glitch.
Its that long ago since i tried it, it took a while to understand what was going on, and thats what i worked it out to be.
But its either at the end or the start of the month dates that should be in the list went missing and then came back a later in the month providing they had not passed.
All i could think of was the way the month ad day was used as a sort.
I tried to reverse the look up but ended up messing it up.
