IF, AND, OR?

[spendloa]

Good morning all...

Column C always holds a date and column D may (or may not) hold a date. Column E shows a number of days. What I would like to do is something like this:

Return a "1" -- if there is a date in culumn D (this should be checked first) AND the month in D = 1 AND E>8 OR if there is no date in culumn D AND the month in C = 1 AND E>8 -- otherwise return a "0"

I have this and can't work out what is wrong with it:

=IF(AND(MONTH(D5)=1,E5>8),1,IF(MONTH(D5)="",(IF(AND(MONTH(C5)=1,E5>8),1,0)),0))

It keeps returning 1's where they shouldn't be.

As usual, your assitance very much apprecated.
Happy new year!
Al