change the default date time format for an entire web site?

[Jéjé]

Hi,

how to setup a specific date/time format for my web site without having to
apply the format in each grid etc... ?

today the format include day, hour, minutes and seconds, I want only the day
like this format:
mydate.ToString("d")

there is any web.config option to do this?
I'm using ASP.NET 2.0.

thanks.

Jerome.