Hi Pam,
If you try Norman's suggestion to format with 4-digit years you will
have a better ideaof what you actually have. But those breakdowns for
dates look something like what you get when you enter 2 digit years
when entering dates. As the versions of Excel move up so
do the default date ranges implied for two digit years. It is best to
always show four digit years at all times.
214391 - XL2000: How Microsoft Excel Works with Two-Digit Year Numbers
http://support.microsoft.com/default.aspx?scid=kb;en-us;q214391
If you are running Microsoft Windows 98 or later, you can use the When a two
digit year is entered, interpret a year between setting under Regional Settings
in Control Panel to determine the cutoff year for the century. The default value
is 2029, but you can change this to any value between 99 and 9999.
Information on Date and Time can be seen on my Date and Time page.
http://www.mvps.org/dmcritchie/excel/datetime.htm
BTW, To determine if you have Text or numbers
Determine if cell is Number or Text and why is it seen that way (#debugformat)
http://www.mvps.org/dmcritchie/excel/join.htm#debugformat