Robert, Thanks ... works like a charm. I wouldn't have thought to test for TYPE ... Larry In a message dated 4/16/2008 2:02:37 A.M. Eastern Daylight Time, mso@xxxxxxxxxxxxx writes: From: "Tillotson, Robert N (US SSA)" <robert.tillotson@xxxxxxxxxxxxxx> Larry, If you are only interested in the month and want it to be a number = instead of an abbreviation then try this: =3DIF(A5<>"",IF(TYPE(A5)=3D1,MONTH(A5),MONTH(DATEVALUE("1-" & = MID(A5,FIND("-",A5)+1,3) & "-1900"))),"Unknown") It will require no modification to your data as Excel will treat the = invalid dates as text anyway. It simply pulls the month out of the = invalid date ( type <> 1) and builds a valid date to confert to a month = number.=20 **************Need a new ride? Check out the largest site for U.S. used car listings at AOL Autos. (http://autos.aol.com/used?NCID=aolcmp00300000002851) ************************************************************* You are receiving this mail because you subscribed to mso@xxxxxxxxxxxxx or MicrosoftOffice@xxxxxxxxxxxxxxxx To send mail to the group, simply address it to mso@xxxxxxxxxxxxx To Unsubscribe from this group, visit the group's homepage and use the dropdown menu at the top. This will allow you to unsubscribe your email address or change your email settings to digest or vacation (no mail). //www.freelists.org/webpage/mso To be able to share files with the group, you must join our Yahoo sister group. This group will not allow for posting of emails, but will allow you to join and share problem files, templates, etc.: http://tech.groups.yahoo.com/group/MicrosoftOffice . This group is for FILE SHARING ONLY. If you are using Outlook and you see a lot of unnecessary code in your email messages, read these instructions that explain why and how to fix it: http://personal-computer-tutor.com/abc3/v28/greg28.htm *************************************************************