"Myrna Larson" wrote...
Would you care to speculate on the probability that either of your
conditions is true in February, 2005?
....

Depends on what application is generating the OP's .xls files. If Excel,
then maybe 4-to-1 against. If some creaky in-house character mode app (or
even Crystal Reports), then 4-to-1 in favor.

Just pointing out that the OP's formula *COULD* be syntactically valid. In
such cases, better to *ASK* the OP if that's what they really mean than just
to assume they screwed up. Believe it or not, barring inconsistencies I
assume OPs do know what they're talking about and have no patience with
respondents who second guess without seeking confirmation. You prefer to
believe OPs are ignoramuses?