Evidently, yes...that works, too!

***********
Regards,
Ron

XL2002, WinXP


"David Biddulph" wrote:

.... or (presumably) =MOD(DAY(A1),8)=4 ?
--
David Biddulph

"Ron Coderre" wrote in message
...
Through a quirk of your particular scenario, this works

Data Validation for Cell A1
Allow: Custom
Formula: =MOD(DAY(A1)/4,2)=1

Does that help?
***********
Regards,
Ron

XL2002, WinXP


"Jean" wrote:

Hi,

I am trying to limit data entries to only 4 days for a billing cycle of:
4,12,20,28, meaning I can enter a date that it can be 3/4/2006 or
2/12/2005
or 6/28/2007 or 8/20/2010 (just limit days in a date to these 4 days,
month
and year can be any month and any year),

Help please :)

Thanks a lot!