Hmmm. Not for school I'm an office worker. I can say I dont understand the purpose of my modulus function either, but I am using it because I couldnt figure out any other way to get the dates to read. I'd love to do away with it. Someone tossed it out as a good methodology and I took them at their word.

I am not determined to use array formulas...or any other type. It doesnt matter to me but I need it to be bomb proof!

Thanks!

Fraser