Foss,
If there is a reference date in a cell, (say A1), try:
=DATE(YEAR(A1),MONTH(A1)+(DAY(A1)>20),20)-A1
If you want it to be independent of any reference cell then try:
=DATE(YEAR(TODAY()),MONTH(TODAY())+(DAY(TODAY())>20),20)-TODAY()
in each case format the cell as General. If today's date is the 20th then
the formula will show zero

Signature
HTH
Sandy
sandymann@mailinator.com
Replace@mailinator with @tiscali.co.uk
> Hi there,
>
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> Cheers,
> Foss
Foss - 28 Aug 2005 20:41 GMT
Sandy,
Thanks very much, the second one was just what I was after and I've kept
hold of the first as it'll be useful later on!
Cheers,
Foss
> Foss,
>
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> > Cheers,
> > Foss
One way
=DATE(YEAR(TODAY()),MONTH(TODAY())+(DAY(TODAY())>20),20)-TODAY()

Signature
Regards,
Peo Sjoblom
(No private emails please)
> Hi there,
>
[quoted text clipped - 9 lines]
> Cheers,
> Foss
Foss - 28 Aug 2005 20:38 GMT
Hi there Peo,
Thanks very much, that's just what I was after!
Cheers,
Foss
> One way
>
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> > Cheers,
> > Foss