Thanks Bob, I should have said that I need the formula to indentify
individual named sheets, ie Smith. How do include that please.

"Bob Phillips" wrote:

=IF(MAX(rng)(TODAY()-21),"not due","due")

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HTH

RP
(remove nothere from the email address if mailing direct)


"JG" wrote in message
...
I need to write a formula which will search a range of cells containing
dates
and if any of those is greater than todays date less 21 days, then return
the
text "not due".

This is for a customer data base which has home page showing all
customers,
and subsequent pages for indvidual customers. As contact dates are added
for
each customer on their own sheets, then the home page should show if they
are
due (or overdue) for a call