Your question is not entirely clear on this, but are you looking to change
those "dates" from the format you see to the format you want in the same
column? I'm going to assume yes for that question. The first thing we need
to know is if those entries are real Excel dates simply formatted to look
like that. Click on any one of those "dates" and look at the Formula Bar. Do
you see the same number as in the cell or do you see a real date?
1) If you see a real date, simply change the Custom Format for the column
from YYYYDDD to MMDDYYYY.
2) If you see the same number, then do you want a simple text value in the
cell or do you want an actual date formatted to look like MMDDYYYY. I'm
going to assume you want a real date formatted to look like MMDDYYYY as that
would be the most flexible for future possible use. Put this formula in an
unused column somewhere (it assumes that your first "Julian Date" is in A2;
change to suit your actual conditions)...
=DATE(LEFT(A2,4),1,RIGHT(A2,3))
Now select the column of date values this formula produced and press Ctrl+C.
Now click into A2 and select Edit/PasteSpecial from Excel's menu bar. Click
the Values option button and then click OK. Next, with the cells still
selected, change the Custom Format for them to mmddyyyy.
Rick