I'm trying to use a nested IF formula to disaggreggate transactions into distinct aging buckets. I'm getting an error (#NAME) with the following:

=IF(N2<5/27/2017,"over 90",IF(N2<6/27/2017,"60 to 90",IF(N2<7/27/2017,"30 to 60","current")))

N2 represents the transaction posting date; can anyone advise on what's wrong with my formula?