You can do it on a per-cell basis by Right-click on the cell, then
FormatCells NumberTab Custom and entering the following in the window

yyyy-mmmm-dd


Vaya con Dios,
Chuck, CABGx3


"tandem" wrote:

I want set date format 2004-December-09 in my invoicing spreadsheet (only in
this specific Excel spreadsheet, not at a system level). How I can do this?

Thanks