How can i change mail settings to display local time instead of PDT?

when i recieve mail they show recieving time in PDT or PST?how can i adjust it to regional time?How can i change mail settings to display local time instead of PDT?
if yahoo mail,



login into yaho mail--%26gt;options [look on the right hand side]--%26gt; account information[look on the left] -%26gt;fill pass -%26gt;scroll down -%26gt;edit time zone



voila