Depends on what he wants to do with the data. Maybe the first (or last) date in
that range would be sufficient for his purposes.
I know that if I had a contiguous set of dates (no gaps), then I'd just use the
start or end date of each time period.
But even if the OP wanted two columns, it still sounds like he'd want to convert
existing data into those two columns. So I think those questions are still
germane.
hi
16-22 November, 2009 is not a format that excel can reconize as a date.
excel keeps dates as a number then formats it to look like a date.
22 November, 2009 fomated to general is date number 40139. if excel cannot
reconize the number as a date then it treats it as text.
see this site for more info on excel date keeping systems. http://support.microsoft.com/kb/214330