On Thu, 2010-08-19 at 08:19 +0200, Kálmán „KAMI” Szalai wrote: > I think here we should follow the Excel's terminology. I'm pretty sure Excel uses DIAS360. http://office.microsoft.com/es-es/excel-help/dias360-HP005209047.aspx -- Kohei Yoshida - OpenOffice.org Engineer - Novell, Inc. <kyoshida at novell.com>